The colorectal mucosa includes two quantitatively, structurally and functionally dissimilar areas: one, built with colum......

【目的】研究鸡出壳后不同日龄嗉囊中T淋巴细胞及其亚群和B淋巴细胞的定位分布及数量变化规律等一系列的发育过程．【方法】采用单克......