Figure 2.

Binding of suspended retinoblastoma cells to adherent choroidal and glioma cells. A: Y79Rb (1, 2, 3) or WERI Rb (4, 5, 6) cells were suspended over adherent monkey choroid (1, 4), rat C₆ glioma (2, 5), or human embryonic kidney (3, 6) cells as described in Methods. B: Y79Rb cells were pretreated without (1, 3) or with (2, 4) trypsin for 5 minutes. The cells were suspended over adherent choroid (1, 2) or glioma (3, 4) cells for 3 hours as described in Methods. Original magnifications, ×200.