suspensions of rat isolated enterocytes were incubated at 37 degrees c for 15 min in ringer-krebs , ph 7.4 , containing 10 mm d-glucose and 0.125 microm [ thiazole-2-14c ] -thiamin , with or without 1.25 or 12.50 microm 4'-oxythiamine .
C0039859
thiazole
C0030093
oxythiamine