Genetic polymorphisms of C3 and Bf in the Chinese population

The distribution of C3 and Bf in a Chinese population sample has been investigated. In a total of 388 individuals, 385 SS and 3 FS C3 phenotypes were observed and the following gene frequencies calculated: C3F = 0.0039, C3S = 0.9961. In 200 unrelated individuals, 155 S, 38 FS, 6 F and 1 FS 0.7 Bf phenotypes were found. The gene frequencies calculated from these were BfS = 0.8700, BfF = 0.1275, BfS0.7 = 0.0025.