Pharmacological and Biochemical Study of a Carcinoid Tumor.

Abstract
The pharmacological activity and fluorescence characteristics of extracts of an appendiceal carcinoid tumor could be accounted for entirely by its seroton in content, the amount being about 1000 times that of normal tissue. Its enzymatic ability to form serotonin from 5-hydroxytrypto-phane was about 35 times that of normal appendiceal tissue.