| 单词 | Fabricius Bursa |
| 释义 | Fabricius Bursa《英文msh词典》Fabricius Bursa [入口词] Fabricius Bursa [主题词] Bursa of Fabricius [英文释义] An epithelial outgrowth of the cloaca in birds similar to the thymus in mammals. It atrophies within 6 months after birth and remains as a fibrous remnant in adult birds. It is composed of lymphoid tissue and prior to involution,is the site of B-lymphocyte maturation. |
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