CONTRACTILE VACUOLE
\kəntɹˈakta͡ɪl vˈakjuːˌə͡ʊl], \kəntɹˈaktaɪl vˈakjuːˌəʊl], \k_ə_n_t_ɹ_ˈa_k_t_aɪ_l v_ˈa_k_j_uː_ˌəʊ_l]\
Definitions of CONTRACTILE VACUOLE
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A small spherical vesicle, found in the cytoplasm of many Protista, which appears and disappears with regularity.
By Henderson, I. F.; Henderson, W. D.
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A v. observed in a structureless mass of protoplasm (as in the Endoplastica) which slowly fills with a watery fluid and, after reaching a certain size, contracts to obliteration, the process of distention and contraction being repeated rhythmically, after the manner of a systole and diastole.
By Smith Ely Jelliffe
Word of the day
Collagen Induced Arthritis
- ARTHRITIS that is induced in experimental animals. Immunological and infectious agents can be used to develop models. These methods include injections of stimulators the immune response, such as an adjuvant (ADJUVANTS, IMMUNOLOGIC) or COLLAGEN.