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Description of Stentor amethystinus

Extended cells 250-500 microns long, contracted cells 135-350 microns. In the center of the body more spherical macronucleus (in vivo 20-30 microns long) with many (>20) micronuclei. Cells look brown, with red pigment granules and green symbiotic algae. Contractile vacuole at the left wall of the mouth funnel. 90-110 longitudinal ciliary rows, the gap between which becomes larger in the clockwise direction. Peristomial region with 20-25 ciliary rows. About 200-300 adoral membranelles. Parallel to the adoral membrane zone. Common.


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Source: BioPedia

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