Figure 1: The fluorescence of phenol- and terpenoid-enriched secretory cells of flower from Salvia officinalis L. (a) Part of petal with hairs emitted under various excitation of luminescence microscope Leica DM 6000 B, bar = 30 μm; ((b) and (c)) numbered hair cells of petals fluorescing under laser-scanning confocal microscope Leica TCS SP-5 (laser excitation 405 nm) in green-yellow (bar = 30 μm).