Table 1.

Composition of PC species of the DRM fraction and the total cell extract of MDCK cells (a), McArdle cells (b) and sperm cells (c). Numbers of identified PC species refer to peaks indicated in chromatograms A, B and C of Fig. 6. Mean values expressed in mole% ± SD (n = 3) are indicated As with PE species from sperm cells; the relatively high standard deviation in the data was caused by boar-to-boar variation. Within each animal, the composition of DRM and whole cell lipids was nearly identical. The unsaturation and chain length of the sn-1 and sn-2 substituents are expressed as the average number of double bonds or carbon atoms per fatty acyl residue (taking abundance of species into account). The Cholesterol/PC- and PC/SM ratio are molar ratio’s. Asterisks indicate significant differences between DRMs and whole cell extracts in a Students t-test. * P < 0.05, ** P < 0.01 and *** P < 0.001. Red indicates a significant depletion of a lipid component in the DRM when compared to the relative amount detected in whole cells, green indicates a significant accumulation of a lipid component in the DRM when compared to whole cells (for colors P < 0.05)