Heliozoa protozoan feeding on volvox, darkfield light micrograph. Heliozoa are single-celled freshwater organisms with stiff arms (axopodia, hair-like) radiating from their spherical bodies. These axopodia are microtubule-supported projections used for capturing food, sensation, movement, and attachment. Magnification: x560 when printed 10 centimetres wide.
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