GNAS and neoplasm: Evidence for apoptosis induction at tumor tissues after a single IP injection of PEG-b-PCL micelles carrying PTX, CYP, and GSP to ES-2-luc-bearing xenograft (on day 7 post IP ES-2-luc cell inoculation) was obtained from resected tumor tissues, which were collected at 12, 24, 48, and 72 h after an IP injection of PEG-b-PCL micelles carrying PTX, CYP, and GSP at 30, 30, and 30 mg/kg, respectively, sectioned into 10 μm, and visualized by confocal microscope.