title: [A Survey for Colton and Other 3 Rare Blood Group Systems in Chinese Nanjing Han Population].
abstract: OBJECTIVE
  To investigate the distribution of Colton, Diego, Kell and Yt rare blood groups in Chinese Nanjing Han population, so as to improve the transfusion capability of patients with rare blood group and to further enrich the rare-blood-donor bank.
  
  
  METHODS
  A total of 2 015 blood samples from the blood donors were selected randomly to screen the presence of K⁺ and Kp(c+) (Kell), Yt(b+) (Yt), Co(b+) (Colton), Di(a+b+) and Di(a+b-) (Digeo) antigen allele by using PCR and multiplex PCR.
  
  
  RESULTS
  Out of 2005 samples, 1 case with K⁺ gene, 8 cases with Yt(b+) gene and 100 cases with Di(a+b+) gene, 2 cases with Di(a+b-) were identified, while no Kp(c+) and Co(b+) were detected.
  
  
  CONCLUSIONS
  The frequencies of K⁺, Yt(b+) and Di(a+), Di(b+) are 0.0003, 0.0013 and 0.0258, 0.9742, respectively. They are very rare blood groups in Chinese Nanjing Han population.
authors.affiliation: Laboratory of Transfusion, Jiangsu Province Blood Center, Nanjing 210042, Jiangsu Province, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Laboratory of Transfusion, Jiangsu Province Blood Center, Nanjing 210042, Jiangsu Province, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Ma
authors.affiliation: Laboratory of Transfusion, Jiangsu Province Blood Center, Nanjing 210042, Jiangsu Province, China. E-mail: lyc60@126.com.
authors.forename: Yan-Chun
authors.initials: YC
authors.lastname: Liu
mesh_terms: D000483:Alleles; D044466:Asian People / Q000235:genetics*; D001782:Blood Donors; D001789:Blood Group Antigens / Q000235:genetics*; D001803:Blood Transfusion; D002681:China; D006801:Humans; D060885:Multiplex Polymerase Chain Reaction
chemical_list: D001789:Blood Group Antigens