据文献介绍:临床最好使用本地区、同一条件的正常值。为此,我们于1981～1984年间对本市区和市郊各年龄组健康人血清中三种免疫球蛋白(简称“Ig”)G、A、M 和总补体 CH_(50)及补体 C_3含量的测定。一、对象:凡在我院健康体检,经检查后各项指标正常的工人、农民(系献血员)、知识分子、学生、儿童(入托体检)等按年龄大小分组。新生儿(正常足月产脐 According to the literature: the best clinical use of the region, the same conditions of normal. To this end, we measured the contents of G, A, M, total complement CH_ (50) and complement C_3 of three kinds of immunoglobulin (“Ig”) in the serum of healthy people of all age groups in this urban area and suburbs from 1981 to 1984 . I. Object: All the workers, peasants (blood donors), intellectuals, students, children (admitted to the medical examination) who have normal physical examination in our hospital and whose indicators are normal after the examination are grouped by age group. Neonatal (normal full-term navel