Abstract
The plaque-forming cell response and serum antibody titres to sheep red blood cells (SRBC) were enhanced in mice fed diets moderately deficient in the amino acids phenylalanine-tyrosine. These diets sustained normal growth during a 4 week study period. More severe limitation of phenylalanine-tyrosine or multiple essential amino acid restriction gave rise to a slight increas in the delayed hypersensitivity reaction to SRBC. These latter diets usually limit growth; nevertheless the humoral immune response to SRBC was not significantly depressed except in the mice fed a diet (diet 7) with severe restriction of seven essential amino acids. These results suggest that dietary restriction may suppress the production or function of an inhibitory cell, such as a suppressor T cell, whilst not affecting the effector cell to the same degree.
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Selected References
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