passages.id: split_6_test_3400_passage
passages.type: progene_text
passages.text: The genes investigated were those that code for interleukin ( IL ) - 1alpha , IL-1beta , IL-1R , IL-1RA , IL-4RA , IL-2 , IL-4 , IL-6 , IL-10 , IL-12 , interferon-gamma ( IFN-gamma ) , transforming growth factor - beta ( TGF-beta ) , and tumor necrosis factor - alpha ( TNF-alpha ) .