GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Light micrograph of a Volvox aureus green alga spherical colony, showing the lower part of a burst colony with several flat packets of 16 to 64 elongate, pale biflagellate sperms. Differential interference contrast. Magnification 800x when printed at 10 centimetres width.
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