GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Algae. Differential interference contrast micrograph of a sample of pond water, showing Oscillatoria sp. cyanobacteria (blue-green algae, long filaments), Euglena sp. green algae (round), and Pinnularia sp. diatoms (rod-shaped). Magnification: x360 when printed 10 centimetres wide.
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