Fig. 6.
Comparison of the relative avidity of adhesion of HEL cells and FLY cells to native ICAM4Fc and IC4D73RFc.
Binding of cation-activated HEL cells or PMA+ cation–activated FLY cells was compared by titration of ICAM4Fc, IC4D73RFc, and NCAMFc as described in “Materials and methods.” Adhesion to ICAM4Fc, IC4D73RFc, or NCAMFc of HEL cells is indicated by triangles, crosses, or lines, respectively. Adhesion to ICAM4Fc, IC4D73RFc, or NCAMFc of FLY cells is indicated by diamonds, squares, or stars, respectively.