avian erythroblastosis virus ( aev ) contains two distinct oncogenes , erba and erbb . the erbb oncogene , which is homologous to a portion of the epidermal growth factor receptor , is related to the src family of oncogenes and efficiently transforms erythroblasts , whereas erba potentiates the effects of erbb by blocking the differentiation of erythroblasts at an immature stage .
C0242987
erba
C0007589
differentiation