Figure 2.

C. roseus cell suspension cultures. A, Compact callus clusters formed after 3 days of inoculation in the MS liquid medium. B, A dispersed cell suspension culture formed after 6 days of inoculation in the above-mentioned medium. C, Microscopic observation of six-day-old culture: arrows indicate divided cells. D, Fluorescence microscopy (495 nm excitation and 520 nm emission) of FDA-stained cells. Six-day-old cultures were used for microscopic observation and FDA staining. Bar represents 10 μm.