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Assessment of d ifferent f ormalin c oncentrations on the h istochemical s taining of l iver,k idneys and l ungs of Wistar r ats

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Toxicology Advances 2023年第3期5卷 22-27页

作者： Gideon Taiwo Oluwaloye Ochuko Fortunate Jenakevwe Kenneth Chukwudi Onyegbula julius kayode bankole Seyi Samson Enitan Department of Medical Laboratory Science Babcock UniversityIlisan-Remo121103Ogun StateNigeria Department of Biomedical Laboratory Science University of IbadanIbadan200005Oyo StateNigeria Department of Medical Laboratory Science Ambrose Alli UniversityEkpoma310006Edo StateNigeria

Background:Formaldehyde is a chemical substance used to preserve the biochemical and physiological components of a tissue by preventing autolysis and putrefaction,leaving the tissue in a life-like ***:This study aims to assess the effect of formalin concentrations on the histochemical staining in liver,kidneys and lungs of Wistar ***:A total of ten(10)Wistar rats were purchased and allowed to acclimatize for a period of 2 weeks in plastic cages with iron netting at the Animal House facility,Babcock *** animals were placed on standard rat feeds and water *** rats were randomly sacrificed by cervical dislocation,following mild anaesthesia using chloroform *** histological examination,the liver,lungs,and kidneys of Wistar rats were removed and preserved in neutral buffered formalin at 2%,4%,6%,8%,and 10%*** were stained in Haematoxylin and Eosin(Vector Laboratories,***,US).The quality of the nuclei,cytoplasm and cell membrane were graded on a scale of 1(poor)to 5(excellent).Results:Six percent(6%)formalin was observed to produce excellent results in liver tissues with a total grade of sixteen(16).10%formalin produced excellent results in lung tissues with a total grade or nineteen(19).Interestingly,2%,6%and 10%formalin concentrations produced excellently results in kidney tissues with the highest total grade fourteen(14).Conclusion:This study concludes that 6%formalin produced better section and staining qualities more than the commonly used 10%formalin according to the observations from the stained *** implies that the concentration of formalin affects the histochemical staining in liver,kidneys and lungs of Wistar rats.

关键词： fixation kidney liver lungs neutral buffered formalin Wistar rats

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Liquid Based Cytology of Cell Remnants in Needles Used for Breast Fine Needle Aspiration

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Journal of Cancer Therapy 2010年第4期1卷 192-194页

作者： Avwioro Godwin Iyiola Sina bankole julius Osiagwu Daniel Muhammad Ahmad Faculty of Basic Medical Sciences Delta State University Abraka Nigeria

This study examined cells contained in needles used for the collection of breast fine needle aspirates for the detection of malignant cells trapped in the needles. Remnants of cells contained in 50 needles used for the collection of scanty breast fine needle aspirates were examined by the liquid based cytology technique and compared with the conventional cytological technique of specimens in the corresponding syringes. The breast specimens were collected with clean sterile needles attached to the syringes. Smears were made and stained by the conventional method. The needles were removed from the syringes and a fixative was withdrawn into the syringes and the syringes were recapped with the needles. The fixative containing the specimen was then completely discharged into a centrifuge tube through the needles and treated by the liquid based cytology technique. The study revealed that cells were found trapped in all the needles used for the collection of breast FNA. 6% of them were positive for malignancy, similar to results obtained in the conventional method. Needles used for the collection of breast FNA should be examined before malignancy is completely ruled out particularly in extremely scanty specimens with a clinical suspicion of malignancy.

关键词： Liquid Based Cytology Needle Cell Remnants Fine Needle Aspiration Breast

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