Abstract
Summary
1. Trichinella spiralis larvae incorporated C14 when cultured in vitro in a serum-Rrebs-Ringer medium or Rrebs-Ringer medium containing either dl-alanine-2-C-14 or glycine-2-C-14. 2. Carbon-14 analysis of the larvae revealed a progressive uptake of the C14-labeled amino acids in both types of media through 48 hours of incubation. 3. The larvae incorporated more C14 activity (cpm) from glycine-2-C-14-labeled media than from dl-alanine-2-C-14-labeled media. 4. Of the total C14 incorporated by larvae cultured 48 hours in glycine-2-C-14-la-beled media about 70 to 84% was precipitable by tungstic acid, and was presumably chiefly in the proteins. Larvae cultured in the dl-alanine-2-C-14-labeled media incorporated about 32-57% of their total C14 content into material precipitable by tungstic acid.
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