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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Anal Bioanal Chem. 2018 Nov 28;411(1):157–170. doi: 10.1007/s00216-018-1448-1

Fig. 3.

Fig. 3

Determination of Eu3+-doped luminescent NPs on cellular viability. MDA-MB-231 cells were incubated with Eu3+-doped NaYF4 NPs at 37°C for 4 h (top row) and 12 h (bottom row) followed by live/dead staining using Calcein AM (green, middle column) and EthD-1 (red, right column). Scale bar is 300 µm.