Song, Yong-An Apatinib preferentially inhibits PC9 gefitinib-resistant cancer cells by inducing cell cycle arrest and inhibiting VEGFR signaling pathway. [electronic resource] - Cancer cell international 2019 - 117 p. digital Publication Type: Journal Article ISSN: 1475-2867 Standard No.: 10.1186/s12935-019-0836-8 doi