Abstract
RECENTLY the presence of a substance capable of stimulating erythropoiesis (erythropoietin) in the peripheral blood of man1 and anæmic animals2 has been demonstrated repeatedly by a variety of assay methods2–4. Except for the few techniques which utilize the normal animal for assay purposes, all the current methods employ animals altered in such a way as to increase sensitivity to the test substance. Despite theoretical objections raised to the use of non-physiological preparations, such as the hypo-physectomized or starved animal, in an assay, the results have been found reliable when iron-59 incorporation into the erythrocyte or reticulocytosis is chosen as the measure of erythropoietic activity5.
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SCHROEDER, L., GURNEY, C. & WACKMAN, N. Assay of Erythropoietin in Bone Marrow Suspensions. Nature 181, 1537–1538 (1958). https://doi.org/10.1038/1811537b0
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DOI: https://doi.org/10.1038/1811537b0
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