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Related to cytostome: cytopyge
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Noun1.cytostome - mouth of a protozoan
protozoan, protozoon - any of diverse minute acellular or unicellular organisms usually nonphotosynthetic
mouth - the externally visible part of the oral cavity on the face and the system of organs surrounding the opening; "she wiped lipstick from her mouth"
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The fine structure of the cytostome of the apostomatous ciliate Hyalophysa chattoni.
The cytostome was observed at the anterior part of the non-ciliary zone and led to a conspicuous cytopharynx (Fig.
Cytostome In flagellates and ciliates, the cavity that opens by way of the peristome (lips) to allow solid food particles to enter the mouth.