highly purified preparations of plasma membranes from control and ketoconazole-treated ( 1 microm , 120 h ) epimastigotes of trypanosoma cruzi have been obtained by cell disruption using abrasion with glass beads , differential centrifugation and isopycnic centrifugation in continuous , self-generating percoll gradients .
C0007603
plasma membranes
C0007634
cell