Abstract
Summary
Leukocytes of cystinuric patients incorporate labelled cystine and lysine from the medium at a normal rate, even when these amino acids are added in very low concentration. Rate of uptake of cystine by either normal or “cystinuric” leukocytes is not affected by presence of high concentrations of arginine and lysine. The mechanism of renal tubular concentration may therefore be different in kind from that of leukocytes.
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