STAT5 phosphorylation in 32D cells.

(A) 32D myeloid cells that expressed TEL/PDGFβR variants were lysed and immunoblotted with antibody against TEL/PDGFβR. (B) Cell lysates were also immunoprecipitated with antibody against STAT5 and immunoblotted with antibody against phosphotyrosine or (C) STAT5. Arrow indicates hyperphosphorylated STAT5.