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. 2020 Jul 26;10(8):1462. doi: 10.3390/nano10081462

Figure 5.

Figure 5

Two-photon excitation PDT effect of SiNPs on 3D cultures. Spheroids from MCF-7 cells were treated or not with 50 µg mL−1 of SiNPs for 24 h and irradiated or not with pulsed laser at 900 nm (3 scans × 1.57 s). Pictures are representative of the whole. Scale bar: 100 µm.