Figure 7.

Involucrin expression by SCC4 cells. (A–D) Immunofluorescence staining of parental SCC4 cells (A and C) and SCC4 cells transduced with the wild-type chick β1 integrin subunit (B and D). (A and B) Adherent cells; (C and D) single cell suspensions prepared by trypsinization of adherent cultures. Bars, 60 μm (A and B) and 100 μm (C and D). (E) Percentage of involucrin-positive SCC4 cells in adherent postconfluent cultures scored after disaggregation. Data shown are means ± SEM from a minimum of three experiments.