病毒性肝炎可分为甲型、乙型和非甲非乙型三种,见表1。由于甲型和乙型肝炎的病毒已经确定,因此有关免疫学问题也作了深入的研究。这对于了解病毒性肝炎的流行规律,阐明发病机理,解决临床诊断和免疫预防,是有一定的意义的。甲型肝炎一、甲型肝炎病毒甲型肝炎病毒(HAV)是一种微小的核糖核酸(RNA)病毒,呈20面对称体颗粒,在狨猴和黑猩猩身上接种已获得成功,并可进行传代,但是体外培养分离尚未成功。应用免 Viral hepatitis can be divided into A, B and non-A non-B three, see Table 1. Since the viruses of Hepatitis A and Hepatitis B have been identified, the immunological issues have also been studied in depth. This is to understand the epidemic of viral hepatitis, elucidate the pathogenesis, to solve clinical diagnosis and immunoprophylaxis, there is a certain significance. Hepatitis A Hepatitis A virus Hepatitis A virus (HAV) is a tiny RNA virus that has 20 symmetrical body particles and has been successfully used in monkey and chimpanzee vaccines Passage, but in vitro isolation has not been successful. Application free