Fig. 2: Mean levels (and standard deviations) of alkenylacyl and diacyl components of PC and PE fractions in samples taken from subjects at various times (see text for methods). The level of alkenylacyl-PE at 1200 h (*) differed significantly (p <0.01) from that taken at 0800 h; the level of diacyl-PC at 1000 h (#) differed significantly (p <0.05) from that at 0800 h.