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Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry traces the geographical source of Biomphalaria pfeifferi and Bulinus forskali,involved in schistosomiasis transmission

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Infectious Diseases of Poverty 2024年第1期13卷 98-99页

作者： Papa Mouhamadou Gaye EI Hadj Ibrahima Ndiaye Souleymane Doucoure Doudou Sow Mapenda Gaye Ndiaw Goumballa Carole Cassagne Coralie L'Ollivier Oleg Medianikov Cheikh Sokhna Stephane Ranque Aix-Marseille University IRD AP-HM SSA VITROME Marseille France VITROME International IRD-UCAD Campus Dakar Senegal Hospital-University Institut (IHU) Mediterranée infection Marseille France Departement of Animal biology Faculty of Sciences and Techniques UCAD Dakar Senegal Department of Parasitology-Mycology UFR Sciences de la Santé Université Gaston Berger Saint-Louis Senegal

Background Freshwater snails of the genera Bulinus spp.,Biomphalaria spp.,and Oncomelania *** the main intermediate hosts of human and animal *** of these snails has long been based on mor-phological and/or genomic criteria,which have their *** limitations include a lack of precision for the morphological tool and cost and time for the DNA-based ***,Matrix-Assisted Laser Desorp-tion/lonization Time-Of-Flight(MALDI-TOF)mass spectrometry,a new tool used which is routinely in clinical microbi-ology,has emerged in the field of malacology for the identification of freshwater *** study aimed to evaluate the ability of MALDI-TOF MS to identify Biomphalaria pfeifferi and Bulinus forskali snail populations according to their *** This study was conducted on 101 *** and 81 *** snails collected in three distinct geo-graphical areas of Senegal(the North-East,South-East and central part of the country),and supplemented with wild and laboratory *** which had previously been morphologically described were identified by MALDl-TOF MS[identification log score values(LSV)≥1.7],after an initial blind test using the pre-existing *** DNA-based identification,new reference spectra of ***(n=10)and ***(n=5)from the geographical areas were added to the MALDI-TOF spectral *** final blind test against this updated database was per-formed to assess identification at the geographic source *** MALDI-TOF MS correctly identified 92.1%of 101 *** snails and 98.8%of 81 *** *** the final blind test,88%of 166 specimens were correctly identified according to both their species and sampling site,with LSVs ranging from 1.74 to *** geographical source was adequately identified in 90.1%of 91 *** and 85.3%of 75 *** *** Our findings demonstrate that MALDI-TOF MS can identify and differe

关键词： Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry Snail Intermediate host Biomphalaria pfeifferi Bulinus forskali Schistosomiasis Senegal

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SARS-CoV-2 ORF10 hijacking ubiquitination machinery reveals potential unique drug targeting sites

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Acta Pharmaceutica Sinica B 2024年第9期14卷 4164-4173页

作者： Kaixiang Zhu Lili Song Linyue Wang Lei Hua Ziyu Luo Tongyun Wang Bo Qin Shuofeng Yuan Xiaopan Gao Wenyi Mi Sheng Cui NHC Key Laboratory of Systems biology of Pathogens National Institute of Pathogen BiologyChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Key Laboratory of Pathogen infection Prevention and Control(Peking Union Medical College) Ministry of EducationBeijing 100730China The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics Key Laboratory of Immune Microenvironment and Disease(Ministry of Education)Tianjin Medical University General HospitalDepartment of ImmunologyTianjin Medical UniversityTianjin 300070China Medical School Yan’an UniversityShaanxi ProvinceYan’an 716000China State Key Laboratory of Emerging Infectious Diseases Li Ka Shing Faculty of Medicinethe University of Hong KongPokfulamHong Kong SARChina Department of microbiology Li Ka ShingFaculty of Medicinethe University of Hong KongPokfulamHong Kong SARChina

Viruses often manipulate ubiquitination pathways to facilitate their replication and ***2ZYG11B known as the substrate receptor of cullin-2 RING E3 ligase,is bound by SARS-CoV-2 ORF10 to increase its E3 ligase activity,leading to degradation of IFT46,a protein component of the intraflagellar transport(IFT)complex *** results in dysfunctional cilia,which explains certain symptoms that are specific to ***,the precise molecular mechanism of how ORF10 recognizes CUL2ZYG11B remains ***,we determined the crystal structure of CUL2ZYG11B complexed with the N-terminal extension(NTE)of SARS-CoV-2 ORF10(2.9 A°).The structure reveals that the ORF10 N-terminal heptapeptide(NTH)mimics the Gly/N-degron to bind *** studies identified key residues within ORF10 that are key players in its interaction with CUL2ZYG11B both in ITC assay and in vivo *** addition,we prove that enhancement of CUL2ZYG11B activity for IFT46 degradation by which ORF10-mediated correlates with the binding affinity between ORF10 and ***,we used a Global Protein Stability system to show that the NTH of ORF10 mimics the Gly/N-degron motif,thereby binding competitively to CUL2ZYG11B and inhibiting the degradation of target substrates bearing the Gly/N-degron ***,this study sheds light on how SARS-CoV-2 ORF10 exploits the ubiquitination machinery for proteasomal degradation,and offers valuable insights for optimizing PROTAC-based drug design based on NTH CUL2ZYG11B interaction,while pinpointing a promising target for the development of treatments for COVID-19.

关键词： SARS-CoV-2 ORF10 Crystal structure cullin-2 RING E3 ligase Drug design

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Single-cell transcriptomics reveals T-cell heterogeneity and immunomodulatory role of CD4+T native cells in Candida albicans infection

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BIOCELL 2024年第9期48卷 1355-1368页

作者： KERAN JIA YANHAO ZHANG MENGYU JIANG MENGGE CUI JIA WANG JIAJIA ZHANG HUIHAI ZHAO MENGYAN LI HUA WANG QUANMING ZOU HAO ZENG National Engineering Research Center of Immunological Products Department of Microbiology and Biochemical PharmacyCollege of PharmacyArmy Medical UniversityChongqing400038China Department of clinical Laboratory The 980th Hospital of PLA Joint Logistics Support Force(Bethune International Peace Hospital)Shijiazhuang050082China

Objective:Candida albicans is a common fungal pathogen that triggers complex host defense mechanisms,including coordinated innate and adaptive immune responses,to neutralize invading fungi *** the immune microenvironment has the potential to inform the development of therapeutic strategies for fungal ***:The study analyzed individual immune cell profiles in peripheral blood mononuclear cells from Candida albicans-infected mice and healthy control mice using single-cell transcriptomics,fluorescence quantitative PCR,and Western *** investigated intergroup differences in the dynamics of immune cell subpopulation infiltration,pathway enrichment,and differentiation during Candida albicans ***:Our findings indicate that infiltration of CD4^(+)naive cells,regulatory T(Treg)cells,and Microtubules(MT)-associated cells increased after infection,along with impaired T cell ***,CD4^(+)T cells and plasma cells were enhanced after infection,suggesting that antibody production is dependent on T *** addition,we screened 6 hub genes,transcription factor forkhead box protein 3(Foxp3),cytotoxic T-lymphocyte associated protein 4(CTLA4),Interleukin 2 Receptor Subunit Beta(Il2rb),Cd28,C-C Motif Chemokine Ligand 5(Ccl5),and Cd27 for alterations associated with CD4^(+)T cell ***:These results provide a comprehensive immunological landscape of the mechanisms of Candida albicans infection and greatly advance our understanding of adaptive immunity in fungal infections.

关键词： Candida albicans Single-cell transcriptomics Immune microenvironment Fungal infections Hub gene

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Dengue hemorrhagic fever with rectus sheath hematoma:A case report

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Asian Pacific Journal of Tropical Medicine 2024年第3期17卷 136-138页

作者： Boudhayan Bhattacharjee Hardik Patel Rucha Karad Vasireddy Teja Agnibho Mondal Soumendra Nath Haldar Bibhuti Saha Department of Infectious Diseases and Advanced microbiology School of Tropical MedicineKolkataIndia

Rationale:Acute pain is a medical emergency that requires prompt abdominal evaluation and ***,a mosquito-borne arboviral infection,can lead to complications such as acute abdominal *** concerns:A 72-year-old hypertensive female presented with high-grade intermittent fever with chills and rigors for four *** was diagnosed with dengue fever(NS1Ag-reactive)the day before admission.A contrast-enhanced computed tomography of the abdomen showed a hematoma along the rectus sheath which was managed conservatively as per surgical ***:Dengue hemorrhagic fever with rectus sheath ***:Blood transfusion and fluid ***:Ten days after discharge,the patient reproted no pain in the right iliac fossa and the size of the hematoma was significantly ***:Although it is rarely seen as a cause of acute abdomen,complaints of adnominal pain should never be ignored in critical or convalescent phase of dengue *** investigations should be promptly conducted as hematoma is often difficult to be diagnosed *** in diagnosis of rectus sheath hematoma can be fatal.

关键词： Dengue fever Rectus sheath hematoma Surgical emergency Acute appendicitis

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Animal models of hepatitis E infection: Advances and challenges

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 171-180页

作者： Ze Xiang Xiang-Lin He Chuan-Wu Zhu Jia-Jia Yang Lan Huang Chun Jiang Jian Wu Chinese Consortium for the Study of Hepatitis E(CCSHE) Zhejiang University School of Medicine Hangzhou 310030China Department of Infectious Diseases The Fifth People’s Hospital of SuzhouSuzhou 215007China Department of infection Management The Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhou 215008China Department of clinical Laboratory The Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhou 215008China 不详

Hepatitis E virus(HEV)is one of the leading causes of acute viral hepatitis *** most of HEV infections are asymptomatic,some patients will develop the symptoms,especially pregnant women,the elderly,and patients with preexisting liver diseases,who often experience anorexia,nausea,vom-iting,malaise,abdominal pain,and *** infection may become chronic in immunosuppressed *** addition,HEV infection can also cause several extrahepatic *** exists in a wide range of hosts in nature and can be transmitted across ***,animals susceptible to HEV can be used as *** establishment of animal models is of great significance for studying HEV transmission,clinical symptoms,extrahepatic manifestations,and therapeutic strategies,which will help us understand the pathogenesis,prevention,and treatment of hepatitis *** review summarized the animal models of HEV,including pigs,monkeys,rabbits,mice,rats,and other *** each animal species,we provided a concise summary of the HEV genotypes that they can be infected with,the cross-species transmission pathways,as well as their role in studying extrahepatic manifestations,prevention,and treatment of HEV *** advantages and disadvantages of these animal models were also *** review offers new perspectives to enhance the current understanding of the research landscape surrounding HEV animal models.

关键词： Hepatitis E virus Animal models Pathogenesis Prevention Treatment

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The RNA-binding domain of DCL3 is required for long-distance RNAi signaling

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aBIOTECH 2024年第1期5卷 17-28页

作者： Jie Li Bo-Sen Zhang Hua-Wei Wu Cheng-Lan Liu Hui-Shan Guo Jian-Hua Zhao State Key Laboratory of Plant Genomics Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Biotic Interactions University of the Chinese Academy of SciencesBeijing 100049China Qilu Zhongke Academy of Modern microbiology Technology Jinan 250022China

Small RNA(sRNA)-mediated RNA silencing(also known as RNA interference,or RNAi)is a conserved mechanism in eukaryotes that includes RNA degradation,DNA methylation,heterochromatin formation and protein translation *** plants,sRNAs can move either cell-to-cell or systemically,thereby acting as mobile silencing signals to trigger noncell autonomous ***,whether and what proteins are also involved in noncell autonomous silencing have not been *** this study,we utilized a previously reported inducible RNAi plant,PDSi,which can induce systemic silencing of the endogenous PDS gene,and we demonstrated that DCL3 is involved in systemic PDS silencing through its RNA binding *** confirmed that the C-terminus of DCL3,including the predicted RNA-binding domain,is capable of binding short *** affecting RNA binding,but not processing activity,reduced systemic PDS silencing,indicating that DCL3 binding to RNAs is required for the induction of systemic *** mosaic virus infection assays showed that the RNA-binding activity of DCL3 is required for antiviral RNAi in systemically noninoculated *** findings demonstrate that DCL3 acts as a signaling agent involved in noncell autonomous silencing and an antiviral effect in addition to its previously known function in the generation of 24-nucleotide sRNAs.

关键词： RNAi signaling DCL3 RBD RNAs Cucumber mosaic virus

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Reduced clinical severity during 2022 Shanghai Spring epidemic of SARS-CoV-2 omicron BA.2 variant infection——an integrated account of virus pathogenicity and vaccination effectiveness

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National Science Review 2024年第4期11卷 24-27页

作者： Xingyue Wu Yao Chen Kangli Cao Yao Shen Xueling Wu Yilin Yang Zhongshu Kuang Qingrun Li Zhenzhen Lu Yichen Jia Mian Shao Guorong Gu Xiangwei Wang Ye Yao Ying Wang Shaodie Chen Zhigao Yu Wei Wei Longfei Ding Lulu Lan Tianwen Gu Xiangyu Long Jian Sun Lingyu Xing Jiayuan Shen Yi Han Yue Luo Sucheng Mu Mengna Lin Xiaoyan Zhang Rong Zeng Jianqing Xu Guoping Zhao Lihong Huang Zhenju Song Department of Emergency Medicine Clinical Center for Bio-Therapy Department of Biostatistics and Department of UrologyShanghai Key Laboratory of Lung Inflammation and Injury Zhongshan Hospital Fudan University Department of Respiratory and Critical Care Medicine Shanghai Pudong Hospital Fudan University Department of Pulmonology Renji Hospital Shanghai Jiao Tong University School of Medicine Key Laboratory of Systems biology Center for Excellence in Molecular Cell Science Shanghai Institute of Biochemistry and Cell Biology Chinese Academy of Sciences Shanghai Public Health clinical Center Fudan University Department of Biostatistics School of Public Health Key Laboratory of Public Health Safety of Ministry of Education and Shanghai Institute of Infectious Disease and Biosecurity School of Public Health Fudan University Shanghai Institute of Immunology Department of Immunology and Microbiology Shanghai Institute of Virology Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of EducationSchool of Medicine Shanghai Jiao Tong University State Key Laboratory of Genetic Engineering Fudan Microbiome CenterSchool of Life Sciences Fudan University Bio-Med Big Data Center Shanghai Institute of Nutrition and Health Chinese Academy of Sciences

The emergence of SARS-Co V-2 variant of concern omicron BA.2 led to high infection incidence rates as well as reduced severity of COVID-19 during the Shanghai Spring epidemic of 2022 [1]. We assessed the role of viral pathogenicity and the effectiveness of inactivated vaccines in a retrospective observational study including 10 258 confirmed COVID-19cases identified between April and June of 2022, from four COVID-19 designated hospitals located in two areas of Shanghai, namely the West Bund and the East Bund, where the populations’ demographic characteristics varied significantly (Table S1, Fig. S1).

关键词： REPLICATION

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Diagnostic and therapeutic role of endoscopic ultrasound in liver diseases:A systematic review and meta-analysis

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World Journal of Gastroenterology 2024年第7期30卷 742-758页

作者： Eyad Gadour Abeer Awad Zeinab Hassan Khalid Jebril Shrwani Bogdan Miutescu Hussein Hassan Okasha Department of Gastroenterology and Hepatology King Abdulaziz Hospital-National GuardAhsa 31982Saudi Arabia Department of Internal Medicine Faculty of MedicineZamzam University CollegeKhartoum 11113Sudan Department of Hepatogastroenterology Kasar Alainy HospitalFaculty of MedicineCairo UniversityCairo 11451Egypt Department of Internal Medicine Stockport Hospitals NHS Foundation TrustManchester SK27JEUnited Kingdom Public Health Authority Saudi Center for Disease Prevention and ControlJazan 45142Saudi Arabia Department of clinical infection Microbiology and ImmunologyInstitute of Infection and Global HealthSchool of Medicine and Life SciencesUniversity of LiverpoolLiverpoolUnited Kingdom Department of Gastroenterology and Hepatology Victor Babes University of Medicine and PharmacyTimisoara 300041Romania Advanced Regional Research Center in Gastroenterology and Hepatology Victor Babes University of Medicine and PharmacyTimisoara 30041Romania Department of Internal Medicine Division of Gastroenterology and HepatologyKasr Al-Aini School of MedicineCairo UniversityCairo 11562Egypt

BACKGROUND In hepatology,the clinical use of endoscopic ultrasound(EUS)has experienced a notable increase in recent *** applications range from the diagnosis to the treatment of various liver ***,this systematic review summarizes the evidence for the diagnostic and therapeutic roles of EUS in liver *** To examine and summarize the current available evidence of the possible roles of the EUS in making a suitable diagnosis in liver diseases as well as the therapeutic accuracy and *** PubMed,Medline,Cochrane Library,Web of Science,and Google Scholar databases were extensively searched until October *** methodological quality of the eligible articles was assessed using the Newcastle-Ottawa scale or Cochrane Risk of Bias *** addition,statistical analyses were performed using the Comprehensive Meta-Analysis *** Overall,45 articles on EUS were included(28 on diagnostic role and 17 on therapeutic role).Pooled analysis demonstrated that EUS diagnostic tests had an accuracy of 92.4%for focal liver lesions(FLL)and 96.6%for parenchymal liver ***-guided liver biopsies with either fine needle aspiration or fine needle biopsy had low complication rates when sampling FLL and parenchymal liver diseases(3.1%and 8.7%,respectively).Analysis of data from four studies showed that EUS-guided liver abscess had high clinical(90.7%)and technical success(90.7%)without significant ***,EUS-guided interventions for the treatment of gastric varices(GV)have high technical success(98%)and GV obliteration rate(84%)with few complications(15%)and rebleeding events(17%).CONCLUSION EUS in liver diseases is a promising technique with the potential to be considered a first-line therapeutic and diagnostic option in selected cases.

关键词： Focal liver lesion Liver abscess drainage Fine needle aspiration Gastric varices Endoscopic ultrasound

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Co-infection with Neisseria mucosa in a patient with tuberculous otitis media

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Journal of Otology 2024年第1期19卷 1-4页

作者： Tatsuya Hioki Kazuaki Soejima Yuki Goto Makoto Sugiura Takumi Umemura Yoshimi Ishihara Yoshikazu Mutoh Daisuke Sakanashi Hiroshige Mikamo Department of clinical Laboratory Tosei General Hospital160 Nishioiwake-choSetoAichi489-8642Japan Department of Respiratory Medicine and Allergy Tosei General Hospital160 Nishioiwake-choSetoAichi489-8642Japan Department of Otolaryngology Tosei General Hospital160 Nishioiwake-choSetoAichi489-8642Japan Department of infection Control Team Tosei General Hospital160 Nishioiwake-choSetoAichi489-8642Japan Department of Infectious Diseases Tosei General Hospital160 Nishioiwake-choSetoAichi489-8642Japan Department of infection Prevention and Control Aichi Medical University Hospital1-1 YazakokarimataNagakuteAichi480-1195Japan Department of clinical Infectious Diseases Aichi Medical University1-1 YazakokarimataNagakuteAichi480-1195Japan

Tuberculous otitis media(TOM) is a rare manifestation caused by Mycobacterium tuberculosis with low incidence rates among extrapulmonary tuberculosis cases. Diagnosis is often delayed because of the presence of several clinical manifestations and the high prevalence of secondary bacterial infections. Few reports have attributed secondary bacterial infections in patients with TOM to commensal Neisseria. Thus, understanding the pathogenic mechanisms and clinical features of commensal Neisseria is important, considering its recent presentation as an infection-causing pathogen. Neisseria mucosa is a commensal inhabitant in humans and is generally considered non-pathogenic but can cause infection in rare cases. Here, we report an atypical secondary infection caused by Neisseria mucosa in an 81-year-old woman with TOM being treated for pulmonary tuberculosis. Direct purulent otorrhea smear microscopy revealed no acid-fast bacilli using Ziehl-Neelsen staining, whereas the phagocytosis of gram-negative cocci by white blood cells was confirmed using Gram staining. Otorrhea culture revealed the growth of N. mucosa. Subsequently, M. tuberculosis infection in the otorrhea was identified using a culture-based method. Vigilance is critical for the early detection of TOM to prevent further complications. This report raises awareness regarding TOM and provides insight into the pathogenicity of N. mucosa in otitis media.

关键词： Commensal neisseria Miliary tuberculosis Mycobacterium tuberculosis Neisseria mucosa Tuberculous otitis media

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Brain abscess caused by Streptococcus anginosus group:Three case reports

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World Journal of clinical Cases 2024年第17期12卷 3243-3252页

作者： Si-Di Tan Ming-Hui Li The 2^(nd)clinical Medical College Zhejiang Chinese Medical UniversityHangzhou 310053Zhejiang ProvinceChina Department of infection Shaoxing People's HospitalShaoxing 312000Zhejiang ProvinceChina

BACKGROUND This case series investigated the clinical manifestations,diagnoses,and treatment of cerebral abscesses caused by Streptococcus *** retrospectively analyzed the clinical characteristics and outcomes of three cases of cerebral abscesses caused by Streptococcus anginosus and conducted a comprehensive review of relevant *** SUMMARY Case 1 presented with a history of left otitis media and exhibited high fever,confusion,and vomiting as primary *** pus culture indicated a brain abscess caused by Streptococcus constellatus *** 2 experienced dizziness for two days as the primary *** pus culture suggested an intermediate streptococcal brain *** 3:Enhanced head magnetic resonance imaging(MRI)and diffusion-weighted imaging revealed occupancy of the left temporal lobe,initially suspected to be a metastatic ***,a postoperative pus culture confirmed the presence of a brain abscess caused by Streptococcus anginosus *** three cases presented in this case series were all patients with community-acquired brain abscesses resulting from angina caused by Streptococcus group *** three patients demonstrated sensitivity to penicillin,ceftriaxone,vancomycin,linezolid,chloramphenicol,and *** treatment was achieved through stereotaxic puncture,drainage,and ceftriaxone administration with a six-week course of *** Preoperative enhanced head MRI plays a critical role in distinguishing brain tumors from *** the correct early diagnostic methods for brain abscesses and providing timely intervention are very *** case series was in accordance with the CARE guidelines.

关键词： Streptococcus anginosus group Cerebral abscess Early diagnosis of a brain abscess Plasma microbial cell-free DNA Next-generation sequencing Case report

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