Duplication within the haptoglobin Hp2 gene

@article{Maeda1984DuplicationWT,
  title={Duplication within the haptoglobin Hp2 gene},
  author={N. Maeda and Funmei Yang and D. Barnett and B. Bowman and O. Smithies},
  journal={Nature},
  year={1984},
  volume={309},
  pages={131-135}
}
DNA sequencing shows that the intragenic duplication within the human haptoglobin Hp2 allele was formed by a non-homologous, probably random, crossing-over within different introns of two Hp1genes, probably in an Hp1F/Hp1S heterozygote. 
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