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Actinosphaerium-eichhornii
Actinosphaerium eichhornii

Genus  Actinosphaerium Stein, 1857

Diagnosis: Spherical naked heliozoa with numerous small nuclei. Cytoplasm often with a discrete peripheral layer of large vacuoles, and the nuclei occur at the inner boundary of this layer. Axonemes terminate on the nuclei or an electron-dense material near the nuclei.

References: Anderson and Beams  (1960).

Actinosphaerium eichhornii
Exocytose of a bunch of diatoms
Actinosphaerium eichhornii
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