exposure of the cells to pronase for 45 to 60 min or growth of the cells for 2 days in tunicamycin , an inhibitor of glycoprotein synthesis , resulted in the absence of the resistance-associated glycoproteins , as determined by polyacrylamide gel electrophoresis of these treated cells after labeling te cells either with sodium [ 3h ] -borohydride or with [ 14c ] - or [ 3h ] glucosamine .
C0007595
growth of
C0007634
cells