title: [Phenotype analysis of alpha1-antichymotrypsin in the Guangzhou Han population].
abstract: OBJECTIVE
  To understand the phenotype distribution profile of alpha1-antichymotrypsin (alpha1-ACT) in the Han population in Guangzhou municipality so as to decide whether geographical factors affect the distribution of alpha1-ACT phenotypes.
  
  
  METHODS
  Polyacrylamide gel isoelectric focusing followed by immunofixation techniques was employed for examining the alpha1-ACT phenotypes in 200 unrelated individuals randomly selected from the Guangzhou Han residents.
  
  
  RESULTS
  Three phenotypes of alpha1-ACT were identified in this subject cohort, which were identical to those identified in Chongqing but with different distributions of the phenotype frequencies.
  
  
  CONCLUSIONS
  Geographical factors may affect the distribution of the phenotype frequencies of alpha1-ACT, which is a promising genetic marker for the pursuit of human genetics.
authors.affiliation: Department of Pediatrics, Zhujiang Hospital, First Military Medical University, Guangzhou 510282, China.
authors.forename: Xiao-juan
authors.initials: XJ
authors.lastname: Yin
authors.forename: Zhi-chun
authors.initials: ZC
authors.lastname: Feng
authors.forename: Qiu-ping
authors.initials: QP
authors.lastname: Li
mesh_terms: D002681:China / Q000208:ethnology; D005260:Female; D006801:Humans; D007525:Isoelectric Focusing; D008297:Male; D010641:Phenotype; D000514:alpha 1-Antichymotrypsin / Q000032:analysis / Q000145:classification*
chemical_list: D000514:alpha 1-Antichymotrypsin