Cell surface sugar chains extend away from the cell membrane and offer a first line of contact with approaching cells and substrates. These sugars are candidates for mediating cell-cell adhesion and migration. Here, I review experiments that implicate . . .

Tumor and embryonic cell surfaces are examined in this symposium with respect to their roles in cell-cell interactions and in early development and malignancy. Three sets of studies have been recently performed in my laboratory to help elucidate the n . . .