Abstract
BY means of the ultra-centrifugal method, it has recently been shown that the red blood pigment of the annelids is not identical with the haemoglobin of the vertebrates as was previously assumed, but is a protein more allied to chlorocruorin and hsemocyanin with regard to molecular weight1. It was suggested that a comparative study of the properties of the respiratory proteins throughout the animal kingdom might bring to light interesting relationships between the various groups of animals. Such an investigation has now been started, and although so far only some forty species have been studied, a number of regularities have been found which seem to merit general attention.
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T. Svedberg and Inga-Britta Eriksson, NATURE, 130, 434. Sept, 17, 1932.
Unpublished determination by Miss L.-B. Eriksson .
T. Svedberg and E. Chirnoaga, J. Amer. Chem. Soc., 50, 1399; 1928.
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SVEDBERG, HEDENIUS, A. Molecular Weights of the Blood Pigments of the Invertebrates. Nature 131, 325 (1933). https://doi.org/10.1038/131325a0
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DOI: https://doi.org/10.1038/131325a0
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