Fig 3. Co-immunoprecipitation of ErbB receptor heterodimers in fibroblast-epithelial communication in rat fetal lung.
Cells were treated with the conditioned medium from opposite cell types and immunoprecipitated with antibody to ErbB1 (A, E), ErbB2 (B, F), ErbB3 (C, G), ErbB4 (D, H) under co-immunoprecipitation conditions. Panels show representative blots for fibroblasts (A, B, C, D) and type II cells (E, F, G, H); illustrated results were consistently found in 3–5 independent experiments.