Heterotrich
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The heterotrichs are a class of ciliates. They typically have a prominent adoral zone of membranelles circling the mouth, used in locomotion and feeding, and shorter cilia on the rest of the body. Man
Stentor roeseli composite image
Morphology of Pseudoblepharisma tenue (Blepharismidae) and its two photosynthetic endosymbionts Chlorella sp. K10 and Ca. Thiodictyon intracellulare (Chromatiaceae)