preincubation of intact microsomes with udp-glc or udp-xylose at 37 degrees c , but not at 0 degrees c , led to expansion of the microsomal udp-sugar pool on which endogenous esterification depended , suggesting that both udp-sugars can enter the microsomal vesicles by a temperature-dependent mechanism .
C0041996
udp-xylose
C0041995
udp-sugars