Abstract
The present experiments are to investigate the effect of protein quality (amino acid composition) on the haematopoetic activity after irradiation. Groups of mice were fed on the diets free of one of the following amino acids: valine, lysine, tryptophane, leucine·isoleucine, methionine or histidine. Haematopoetic activity was determined by the incorporation of 59Fe into blood.
Deficiencies of one valine, leucine·isoleucine, tryptophane or histidine showed great effect, and those of lysine or methionine little effect upon the haematopoetic activity after irradiation. The omis- sion of these four amino acids in the diets considerably delayed the recovery of the activity.
