it is concluded that ( i ) exposure of platelets and lymphocytes to glycerol prior to cell lysis decreases subsequent contamination of the plasma membrane preparation with gtp , and ( ii ) although glycerol pretreatment of other cells does not ensure the subsequent isolation of plasma membrane adenylate cyclase activity displaying high requirements for ( exogenous ) gtp , it is a reasonable first approach to be used during the development of procedures for the isolation of plasma membranes .
C0007634
cells
C0007603
plasma membranes