passages.id: split_8_test_2145_passage
passages.type: progene_text
passages.text: The data show pre - association of STATs with plasma membrane rafts in flotation fractions , which also contained caveolin-1 and flotillin-1 , and suggest that Tyr phosphorylation may not in itself be sufficient to cause the departure of PY - STATs from plasma membrane rafts .