FIG 4. Scanning electron micrograph of BAECs on platinum plate patterned by ion implantation. (Note morphologic deformity of cells owing to effect of trypsin and glutaraldehyde.)

A, Day 5, areas A and B demonstrated uniform proliferation of BAECs.

B and C, Note strong BAEC adhesion only on circular ion-implanted protein-coated areas (original magnification, x100 [for B]; x400 [for C]).