The muscle common actin HHF 35,variably reactive with tumor cells composing 17 of 18 smooth muscle tumors, was found to be the most sensitive marker of leiomyocytic differentiation.

• 肌肉共同蛋白HHF 35在 18例平滑肌细胞型肿瘤中 ,17例有不同程度的阳性反应 ,为平滑肌细胞分化最敏感的标记物。