TGFB1 and lung adenocarcinoma: To determine whether the interaction between macrophages and apoptotic lung epithelial cancer cells inhibits EMT progression, 344SQ murine lung adenocarcinoma cells were treated with conditioned medium (CM) from RAW cells exposed to either UV-irradiated apoptotic 344SQ (ApoSQ-exposed CM) or necrotic 344SQ cells (NecSQ-exposed CM), along with TGF-β1.