phytohemagglutinin ( pha ) -stimulated molt 16 cells ( a human leukemic t cell line , at a concentration of 2 x 10 ( 6 ) cells/ml ) secreted 6 u/ml of interleukin 2 ( il 2 ) into the culture supernatant during 24 h culture .
C0007634
cells
C1327616
secreted