Fig. 5.

Cytometric count of cells. Mean values with standard deviation (vertical bars) are presented. No significant difference in the number of viable cells in all cultured samples was found (P > 0.05, n = 6). Filtered 40 Hz‐pulsed light predominant irradiance: red—593–840 nm, green—560–650 nm, blue—420–580 nm, control—cells kept in dark, positive control—cells kept in dark.