In group II, the volume of thymus corpuscles was small and the number of thymus corpuscles was few; Ⅱ组鸡的胸腺小体体积小且数量少;
The thymus atrophied, the number of lymphocytes and thymic corpuscles decreased obviously. 胸腺萎缩,淋巴细胞与胸腺小体明显减少;
The results showed the thymus of ostrich chicks lay in the back of neck along two sides and clustered together, there was typical Hassall corpuscles. 结果显示:雏鸵鸟胸腺分叶少,仅分布在颈部后段两侧,且聚集在一起,髓质内有典型的Hassall小体。