Results Perforin positive cells were found to be located in the endometrial stroma and expressed natural killer-like cell surface marker (CD56 antigen, also named NK-like cell or CD56+ lymphocyte).

• 结果在各期子宫内膜中，产生穿孔素蛋白的细胞位于子宫内膜间质，此细胞表型特征为CD56+淋巴细胞(自然杀伤样细胞)。