Chaos glabrum Smirnov & Goodkov, 1997

Chaos glabrum 1-3: locomotive; 4 - orthotactic form; 5-7: nuclei.
Scale bar: 1-4: 20 mkm; 5-7: 10 mkm

Chaos glabrum 1: nucleus; 2-3: nuclear lamina; 4-5: heteromorphic mitochondria; 6: cell coat; 6: portion of the contractile vacuole; 7: dictyosome. Scale bar: 1-5 and 7-8 500 nm; 6: 250 nm

  • Locomotive form either polytactic, with several well pronounced pseudopodia or orthotactic. Bulbous or morulate uroid usual. Length in locomotion about 500 mkm and up to 800 mkm for orthotactic form. Floating form radial, with 5-10 thick, rounded pseudopodia, containing both the granuloplasm and the hyaloplasm.
  • 5-30 granular nuclei, discoid biconvex, about 20 mkm in diameter. One contractile vacuole. Numerous small bipiramidal cristals in the cytoplasm. No cysts found.
  • Hexagonal nuclear lamina. Cell coat amorphous, about 20 nm in thickness. Mitochondrial heteromorhism is known, however it is not pronounced in the area, adjacent to the contractile vacuole. Dictyosomes are numerous, each consist of 5-10 cisternae.

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