spleen cells obtained from young and old balb/c mice were cultured in vitro with various mitogens with and without beta-endorphin . beta-endorphin at 10 ( -8 ) m on day 3 of culture significantly enhanced concanavalin a ( 2.0 micrograms/10 ( 6 ) cells per ml ) mitogenesis but not phytohemagglutinin or lipopolysaccharide mitogenesis .
C0007634
cells
C1156237
mitogenesis