develops from capable of common lymphoid progenitor 淋巴样祖细胞 pro-T cell 祖T细胞 A lymphoid progenitor cell of the T cell lineage, with some lineage specific marker expression, but not yet fully committed to the T cell lineage. DN1 cell DN1 thymocyte TN1 cell cell pro-T lymphocyte progenitor T cell DN1细胞 DN1胸腺细胞 TN1细胞 T细胞谱系的淋巴祖细胞，具有一些谱系特异性标记物的表达，但尚未完全变成T细胞谱系。 祖T淋巴细胞 祖T细胞 细胞 lymphoid lineage restricted progenitor cell 淋巴谱系限制祖细胞 T cell differentiation T细胞分化