Paracrystalline Hæmoglobin as a Species Difference between Rattus norvegicus and Rattus rattus

Abstract

THE common laboratory white rat is almost always the albino variety of the Norway rat (brown rat, Rattus norvegicus)1,2 and only exceptionally the albino variety of the black rat (Rattus rattus)3. The two species are morphologically similar, which makes it rather difficult to distinguish them. Nevertheless, there are qualitative characters which make distinction sure.

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References

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VOKÁČ, Z. Paracrystalline Hæmoglobin as a Species Difference between Rattus norvegicus and Rattus rattus . Nature 190, 641–642 (1961). https://doi.org/10.1038/190641a0

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