we evaluated the effect of intravenous ( i.v . ) glucose on the plasma tryptophan ( trp ) and tyrosine ( tyr ) concentration of 12 normal subjects , six patients with carcinoid tumors and the carcinoid syndrome ( carcinoid syndrome ) , and five patients with carcinoid tumors without the carcinoid syndrome ( tumor . )
C0007095
carcinoid tumors
C0024586
carcinoid syndrome