Figure 2

Comparative assessment between CDy6-stained and calcein AM-stained HaCaT cells before and after DMSO extraction. (A,B) After staining with calcein AM (100Â nM) and CDy6 (100Â ng/mL), fluorescence images of live cells were obtained using a confocal microscope at the indicated time points as described in more detail in the materials and methods section. (C,D) The absorbance spectrum of the CLV-DMSO and calcein AM-DMSO extracts from each group was measured with an ELISA reader. The red arrow indicates the peak excitation/emission wavelengths of CDy6, reaching 570/585Â nm.