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. 2021 Jun 9;12(7):3965–3981. doi: 10.1364/BOE.428302

Fig. 11.

Fig. 11.

Normalized Raman spectra of (a) BT-20 cell line with different (1x1010 and 1x109 EVs/ml) concentrations, and (b) 2D PCA transformation of the BT-20 EV spectra with different concentrations.