the phospholipid composition of yeast plasma membrane was manipulated by two different methods : ( i ) by using two auxotrophic strains ka101 ( cho1 ) and mc13 ( cho+ ) which required phospholipid bases for growth and ( ii ) by supplementing saccharomyces cerevisiae ( 3059 ) cells with high concentration of choline or ethanolamine .
C0007603
plasma membrane
C0007634
cells