a) Uptake of FITC-labeled nanogel and LHRH-nanogels by A2780 and SKOV-3 cells (3 h, 37°C, 0.1 mg/ml). b) Whole-cell Pt accumulation in A2780 and SKOV-3 cells as measured by ICP-MS (24 h, 37°C, > 0.5 mg/ml). c) Confocal micrographs (×63) of nanogel and LHRH-nanogel in A2780 cells. The cells were treated for 3 h with the FITC-labeled nanogels (green), stained with Hoechst 33342 (blue) for nucleus for 10 min at 37°C, followed by live cell imaging. Data are mean ± SD, n = 3, *p < 0.05, NS is not significant.