Identification of a 60-kDa V-SRC protein by radioimmunoprecipitation. (C) Control serum, (A and B) tumor-bearing rabbit sera, (B+V) Serum B blocked with virus, (P) anti-Pol serum, (E) anti-Env serum, (G) anti-Gag serum, (CEF) chicken embryo fibroblasts. (Adapted from Brugge and Erickson. 1977. Nature
269: 3346–3348, with permission from Springer Nature.)