摘要： <正> 研究报告猕猴腹膜后纤维瘤和获得性免疫缺陷综合症:流行病学研究。RetroperitonealFibromatosis and Acquired Immunodeficiency Syndrome in Macaques:Epidemiologic Studies. Che-ChungTsai, W Ellis Giddens Jr, WilliamR Morton, Susan L Rosenkranz,Hans D Ochs and Raouy E Benveniste……460 食蟹猴免疫循环复合物。CirculatingImmune Complexes in CynomolgusMacaques. Nancy J Alexander, Thomas B Clarkson and David L Fulgham……465 敏感鼠和抵抗鼠系对自然途径接种致死量JHM株鼠肝炎病毒的反应。Responses ofMice Susceptible or Resistant to Lethal Infection with Mouse HepatitisVirus, Strain JHM, After Exposureby a Natural Route. Leland E Garlinghouse Jr and Abigail L Smith……469