Abstract
EVER since a technique for cultivating tissue cells in vitro has been developed, the isolation of the growth-promoting substances in the embryo extracts has been an important subject of research. Several important facts have been discovered during the attempts to isolate the growth-promoting substance of the chick-embryo juice tested on cultures of tissue cells of fowls. These investigations led in some respects to erroneous results, for example, the statement of the extreme lability of the active principles.
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Zeit. physiol. Chem., 109, 141 (1920).
Acta med. scandinavica, 68, 503 (1928).
J. Biol. Chem., 86, 389 (1930).
NATURE, 143, 602 (1939).
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FISCHER, A. Nature of the Growth-accelerating Substance of Animal Tissue Cells. Nature 144, 113 (1939). https://doi.org/10.1038/144113a0
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DOI: https://doi.org/10.1038/144113a0
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