本文报道了低于生理浓度的orosomucoid糖蛋白(Om)在体外有促进入末梢血淋巴细胞(PBL)有丝分裂的作用。Om又称为α_1-酸性糖蛋白,是α_1球蛋白的一种,MW40000,含45％碳水化合物,存在于人淋巴细胞膜表面。对于它的机能,目前仅知道它在体外有较弱的免疫抑制作用。这种作用需要较高的Om浓度和天然有丝分裂原的 In this paper, it was reported that orosomucoid glycoprotein (Om) below physiological concentration can promote the mitosis of peripheral blood lymphocytes (PBL) in vitro. Om is also known as α 1-acid glycoprotein, a type of α 1 globulin with MW 40,000, which contains 45% carbohydrates and is found on the surface of human lymphocytes. For its function, it is currently only known that it has a weak immunosuppressive effect in vitro. This effect requires a higher concentration of Om and native mitogen