雏鸭胸腺发育的增龄变化(英文)

Changing trends in the development of the thymus in duckling

通过对1～49日龄雏鸭胸腺组织学发育的增龄变化观察以及胸腺绝对重量、胸腺指数和外周血T淋巴细胞а-醋酸萘酯酶阳性率的测定,研究了雏鸭胸腺发育规律。结果表明：1～14日龄雏鸭胸腺生长较为缓慢;21～28日龄胸腺生长十分迅速,到28日龄时雏鸭胸腺中大部分T淋巴细胞已分化发育成熟,雏鸭胸腺已形成能有效产生细胞免疫的组织结构基础;35～49日龄胸腺发育已趋于稳定。文中对胸腺小体的形态进行了详细的描述,并对其功能进行了探讨。

By using routine H. E method and measuring the absolute weight and growth index of thymus and ANAE positive ratios, 1 to 49 days Tianfu duckling were selected to study the changing trends in the normal development of the thymus. The results are as follows：the thymus of duckling develops slowly from 1 to 14 days, and quickly from 21 to 35 days,then steadily from 35 to 49 days. By the 28th day,most T-lymphocytes have well differentiated and the thymus has reached its maturation. There are three types of thymic corpuscles whose functions have been discussed.