A lymphocyte differentiated in the thymus, characterized by specific surface antigens, and specialized for cell-mediated immunity (as in the defense against viruses and cancer and the rejection of foreign tissues). Compare B cell.

T 细胞；胸腺产生细胞(一种在胸腺内分化的淋巴细胞，特点是有特种表面抗原，并专门负起细胞免疫作用，如抵抗病毒、癌及抗拒外来组织等。比较B call)。