7Medawar P B.,Billingam R E.,Brent L..Activity acquired tolerance of foreign cells[J].Nature,1953,3; 172(4379):603-606
8Oleszcuk J.,Darmochwal K D.,Leszcynska G B.,et al.Alteration in the immune system of patients with imminent preterm laour[J].Gynecol Obstet Invest,2000,49(2):110
9Gendron R L.,Baines M G..Are both endogenous and exogenous factors involved in spontaneous foetal abortion?[J].Res Immunol,1990,141(2):154- 158
10Fowlkes B J.,Kruisbeek A M.,Ton-That H.,et al.A novd population of T-cell receptor alpha beta-bearing thymocytes which predominantly expresses a single V beta gene family[J].Nature,1987,329(6136):251-254
