The distribution and histology of lymphoid tissue in the Fabricius ' bursal stalk were studied.

研究了番鸭法氏囊柄部淋巴组织的分布及组织学结构.

It was pointed that Zn had serious influence in the growth of thymus gland and bursa of Fabricius.

指出低锌严重影响胸腺、法氏囊的发育，且影响程度随缺乏时间的延长而加剧。