单词 | contractile vacuole |
释义 | contractile vacuole [kǝn`trak·tǝl `vak·yǝ·wōl] CYTOLOGY A tiny, intracellular, membranous bladder that functions in maintaining intra- and extracellular osmotic pressures in equilibrium, as well as excretion of water, such as occurs in protozoans. |
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