Fig. 2

a1–a4 Represented the wild type D. salina cells under the light, red fluorescence (excitation wavelength 530–550 nm, emission wavelength 575–635 nm), green fluorescence (excitation wavelength 460–490 nm, emission wavelength 510–560 nm), and the merged fluorescence (red with green), respectively; b1–b4 represented the stained D. salina cells under the corresponding mentioned above light and fluorescence sources