Arrangement of human immunoglobulin heavy chain constant region genes implies evolutionary duplication of a segment containing gamma, epsilon and alpha genes.

@article{Flanagan1982ArrangementOH,
  title={Arrangement of human immunoglobulin heavy chain constant region genes implies evolutionary duplication of a segment containing gamma, epsilon and alpha genes.},
  author={John G. Flanagan and Terence H Rabbitts},
  journal={Nature},
  year={1982},
  volume={300 5894},
  pages={709-13}
}
Cosmid clones containing the human gamma, epsilon and alpha heavy chain constant region genes and an epsilon pseudogene have been isolated. All these genes have a switch sequence detectable by hybridization. We have studied overlapping cosmids covering two separate regions of the genome, and the gene order in each of these regions was found to be gamma-gamma-epsilon-alpha. This implies an evolutionary duplication in this multigene family involving gamma, epsilon and alpha genes. 

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