title: C3, BF and C4 polymorphisms in Tunisians.
abstract: The C3, BF, C4A and C4B polymorphisms were studied in a Tunisian population sample. The allelic frequencies for C3 were S = 0.844 and F = 0.148, and for BF, S = 0.535, F = 0.331, SO7 = 0.075 and F1 = 0.041. The most frequent C4 alleles were A3 and B1 followed in a decreasing order by A2, B2 and the A and B null alleles. The results indicate that the Tunisian population is intermediate between the Caucasian and Arab populations with some trace admixture of African Blacks.
authors.affiliation: Laboratoire d'Immunologie, Faculté de Médecine de Tunis, Tunisie.
authors.forename: K
authors.initials: K
authors.lastname: Ayed
authors.forename: Y
authors.initials: Y
authors.lastname: Gorgi
mesh_terms: D003176:Complement C3 / Q000235:genetics*; D003181:Complement C4 / Q000235:genetics*; D011415:Complement Factor B / Q000235:genetics*; D006801:Humans; D011110:Polymorphism, Genetic; D014416:Tunisia
chemical_list: D003176:Complement C3; D003181:Complement C4; D011415:Complement Factor B