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Figure 3–19. Nuclei in cells of Chlorella vulgaris stained with thionine. x 1600 (Nicolov, 1991). a — cell with one nucleus; b — cell with two nuclei; c — cell with three nuclei; d — cell with four nuclei ;e — cell with five nuclei; f — cell with six nuclei; g — cell with more nuclei.
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Figure 3–20. Nuclei in cells of Scenedesmus acutus stained with bisbenzimide H-33258. x 1600 (Nicolov and Tchacarof, 1984). a — cell with one nucleus; b — cell with two nuclei; c — cell with three nuclei; d — cell with four nuclei; e — cell with five nuclei; f — cell with six nuclei; g — cell with seven nuclei; h — cell with eight nuclei; i — 4-cell coenobium; j —cells treated with DNase, at that no nuclear structures are observed.