Fig. 1

Field collection samples and light microscopy of dividing cells of Chlorella sp. (exponential growth phase). Sampling (a), thawed samples on darkness (b). Living cells were observed under bright field (c) and blue-violet light showing red autofluorescence of chlorophyll (d). The photograph shows two cells after division (e). Autospore maturing phase with four daughter cells (f-a) and release of cells (f-b). Scale = 5 μm