using the antibody , we have determined that 1 ) the surface distribution of alpha-agglutinin on alpha cells is polar , 2 ) about 5 x 10 ( 4 ) molecules/cell are constitutively expressed on strain x2180-1b ( alpha ) cells , and 3 ) treatment of alpha cells with the sex pheromone a-factor causes an increase in cell surface alpha-agglutinin , consistent with the a-factor induced increase in cell agglutinability .
C0699040
cell surface
C0007634
cell