title: [Frequencies distribution of GSTT1 and GSTM1 null genotypes in 24 Yunnan populations].
abstract: OBJECTIVE
  To investigate the frequencies distribution of GSTT1 and GSTM1 null genotypes in 24 Yunnan populations.
  
  
  METHODS
  GSTT1 and GSTM1 genotypes were analyzed by PCR procedure.
  
  
  RESULTS
  The range of frequencies for GSTT1 and GSTM1 null genotypes in the populations were 0.188-0.633 and 0.400-0.745, respectively, and in the districts were 0.286-0.583, 0.433-0.745 respectively. There was significant relationship between GSTT1 frequencies and populations.
  
  
  CONCLUSIONS
  The frequencies of GSTT1 and GSTM1 null genotypes in 24 Yunnan populations were different, but they were almost the same in different districts of Yunnan.
authors.affiliation: Human Genetics Center, Yunnan University, Kunming, Yunnan, 650091 PR China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Hong
authors.initials: H
authors.lastname: Shi
authors.forename: Yong-li
authors.initials: YL
authors.lastname: Dong
authors.forename: Wei-xiang
authors.initials: WX
authors.lastname: Li
authors.forename: Wei-min
authors.initials: WM
authors.lastname: Zeng
authors.forename: Jin
authors.initials: J
authors.lastname: Lu
authors.forename: Zhao-qin
authors.initials: ZQ
authors.lastname: Hao
authors.forename: Chun-jie
authors.initials: CJ
authors.lastname: Xiao
mesh_terms: D002681:China; D004247:DNA / Q000235:genetics; D005787:Gene Frequency; D005838:Genotype; D005982:Glutathione Transferase / Q000235:genetics*; D006801:Humans; D016133:Polymerase Chain Reaction
chemical_list: D004247:DNA; D005982:Glutathione Transferase; C413545:glutathione S-transferase T1