DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured transmission electron micrograph (TEM) of Cyanobacteria endospores (Dermocarpa violacea). Cyanobacteria are photosynthetic bacteria that inhabit both marine and freshwater environments. Certain members of the phylum Cyanophyta can undergo multiple fission and produce endospores (baeocytes, shown in this image) within the original parent cell wall and surrounding extracellular mucopolysaccharide matrix. Cyanobacteria are a significant component of the marine nitrogen cycle and an important primary producer in many areas of the ocean. Magnification: x2,125 when shortest axis printed at 25 millimetres.
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