thymus defined in 1951 yearthymus - thymus;
thymus - Organ of vertebrates, usually in pharyngeal or neck region, formed embryologically from gill-pouches or gill-clefts. In mammals lies in chest (in mediastinum), and the cells from gill-pouches are mixed up with masses of lymphocytes; the organ reaches maximum size at puberty, and thereafter slowly diminishes. Exact functions still obscure, but concerned in the system producing antibodies.
near thymus in Knolik
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