Blue-green algae. Coloured transmission electron micrograph of a dividing cell of the blue-green algae Microcystis aeruginosa (also known as Anacystis cyanea). Newly forming daughter cells are seen. Blue-green algae (cyanobacteria) are primitive algae; in structure they are related to bacteria. They are prokaryotes containing no membrane-bound nucleus; instead, as in bacteria, nuclear material is dispersed throughout the cell. Photosynthetic lamellae (thread-like structures) are primitive chloroplasts. M.aeruginosa cells are found in colonies; they bloom in late summer and may liberate a toxin that kills plankton, fish and birds. Magnification: x15,360 at 6x4.5cm size.
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Creative#:
TOP10167804
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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