The tryptophan-requiring auxotrophs escherichia coliWP2A and Cm891 strains wrer used in the *** are sensitive to base pair *** strain have been indentified *** estimated dose rate of tritid
The tryptophan-requiring auxotrophs escherichia coliWP2A and Cm891 strains wrer used in the *** are sensitive to base pair *** strain have been indentified *** estimated dose rate of tritid
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