Abstract
Summary
A rapid microbial (S. faecalis) pad-plate assay procedure, specific for thymine and thymidine, is described, in which response to folic acid and its derivatives is prevented by aminopterin. The method is sensitive to thymine in amounts ranging from about 0.4 to 5 μg and to thymidine in amounts of 0.75 to 7.5 μg.
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