these results demonstrate that : ( 1 ) the junctions act to bind cells together , ( 2 ) adhesive type contact is established between sertoli cells and spermatids at step 8 and subsequent steps of spermiogenesis , ( 3 ) contact is restricted to the spermatid plasma membrane over the acrosome , and ( 4 ) spermatids can be freed from the junctional specializations by treatment with trypsin .
C0007634
cells
C0007603
plasma membrane