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. 2019 Sep 30;9:13275. doi: 10.1038/s41598-019-49978-1

Figure 4.

Figure 4

Uptake of Gd-MSN into tumor spheroids. Tumor spheroids were formed from OVCAR8 cells expressing GFP. Varying amounts of Rhodamine-B labeled Gd-MSN (0, 10, 20 or 50 ng of Gd) were added to the tumor spheroids and, after washing, fluorescence was measured. Cell nuclei were stained with Hoechst dye and thin sections were made by microtome and examined by confocal microscopy.