A Hæmoglobin from Bile Pigment

@article{Barkan1938AHF,
  title={A H{\ae}moglobin from Bile Pigment},
  author={Georg Barkan and Otto Schales},
  journal={Nature},
  year={1938},
  volume={142},
  pages={836-837},
  url={https://api.semanticscholar.org/CorpusID:4073510}
}
The new compound, like hæmoglobin, combines reversibly with oxygen and carbon monoxide, but the non-protein part of its molecule is a bile pigment closely related to verdohæmatin, which might give the impression that the existence of biles pigment-globin compounds was not known before.
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