title: [Studies on the strain differences of Schistosoma japonicum in the mainland of China. VII. Genetic variation and differentiation of five isolates].
abstract: Electrophoretic techniques have been used to survey five different field-collected isolates (i.e., Anhui, Hubei, Guangxi, Sichuan and Yunnan) of S. japonicum from the mainland of China for genetic variation at 7 isozymes markers representing 9 loci. Polymorphic loci were observed for LDH-1, LDH-2, MDH and PGM, respectively, the proportion of polymorphic loci being 44.4%. Average heterozygosity varied between 0.223 and 0.425, with a mean of 0.332. Nei's genetic distance (D) among the populations of 5 isolates gave values between 0.001 and 0.039 with an average of 0.023, indicating that these isolates are very closely related.
authors.affiliation: Institute of Parasitic Diseases, Chinese Academy of Preventive Medicine, Shanghai.
authors.forename: Y X
authors.initials: YX
authors.lastname: He
authors.forename: X W
authors.initials: XW
authors.lastname: Li
mesh_terms: D000483:Alleles; D000818:Animals; D002681:China; D014644:Genetic Variation; D007770:L-Lactate Dehydrogenase / Q000032:analysis; D008291:Malate Dehydrogenase / Q000032:analysis; D008297:Male; D010733:Phosphoglucomutase / Q000032:analysis; D011110:Polymorphism, Genetic; D012549:Schistosoma japonicum / Q000201:enzymology / Q000235:genetics*
chemical_list: D007770:L-Lactate Dehydrogenase; D008291:Malate Dehydrogenase; D010733:Phosphoglucomutase