analytical subcellular fractionation studies indicated that 25-30 % of the total cellular b-cytochrome and 8-10 % of the flavin co-sedimented with plasma membrane markers , irrespective of stimulation of the cells by the chemoattractants n-formyl-met-leu-phe ( fmlp ) or c5a .
C0007603
plasma membrane
C0007634
cells