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| a microscopic structure containing nuclear and cytoplasmic material enclosed by a semipermeable membrane, the basic structural unit of all organisms |
| exemplifying most nearly the essential characteristics of a higher group in natural history, and forming the type |
cytotropic cy·to·trop·ic (sī'tə-trŏp'ĭk, -trō'pĭk)
adj.
Having an affinity for cells; cytophilic.