Fluorescence and transmission electron micrographs of Synedra acus cells. Yellow fluorescence of lipid bodies stained Nile Red dye and the red autofluorescence of chloroplasts (A), ultrastructural characteristics Synedra acus cells in autotrophic culture (B, E) and in mixotrophic cultures with glycerol (C, F) and glucose (D). Designations: Chl -chloroplast; V-vacuole with chrysolaminaran granules, m - mitochondria. N- nucleus. White arrows indicate lipid bodies. Scale bars: (A) - 10 μm, (C, D, E) - 500 nm, (B,F) - 2 μm.