the effects of selective enzymic degradations ( hyaluronidase , chondroitinases , heparitinase or neuraminidase ) on [ 35s ] sulphate-prelabelled cells and on binding sites for cationized ferritin ( cf ) were examined to assess the presence and relative importance of individual species of macromolecules on the cell surface .
C0007634
cells
C0699040
cell surface