passages.id: split_1_test_202_passage
passages.type: progene_text
passages.text: In coimmunoprecipitation experiments , larger amounts of STAT5a - ERK1 / 2 complexes were detected in cytosol from untreated CHOA cells than in cytosol from GH - treated cells , suggesting the presence of preformed STAT5a - ERK1 / 2 complexes in unstimulated cells .