Lymphocyte Migration,Activation,and Effector Function Depends on Cell-Adhesion Molecules A variety of cell surface polypeptides serve as receptors to ensure appropriate cell-cell interactions.These polypeptide include: Selectins Integrins Immunoglobulin Superfamily Mucin-like Vascular Addressins Lymphocyte Migration, Activation, and Effector Function Depends on Cell-Adhesion Molecules ◼ A variety of cell surface polypeptides serve as receptors to ensure appropriate cell-cell interactions. These polypeptide include: ◼ Selectins ◼ Integrins ◼ Immunoglobulin Superfamily ◼ Mucin-like Vascular Addressins