Abstract
Using an ELISA technique, concentrations of γ-interferon and
interleukin-2 were assayed in the supernatants of colonic
intraepithelial lymphocytes cultured with or without
phytohaemagglutinin (PHA). IntraepitheHal lymphocytes produced low
concentrations of γ-interferon and interleukin-2 when
stimulated with PHA, but significantly more than when unstimulated
(