Abstract
BY pituitary treatment of an appropriate species of Rana at the appropriate time of year it has been shown by Rugh1 in the United States that fertilized eggs and developing tadpoles can be obtained the whole year round. I have found that during the winter months (November-February) fertilized eggs and tadpoles of Rana temporaria can be readily obtained by the same methods, although the reaction of this species to pituitary treatment is somewhat different.
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Rugh, R., Science, 85, 588–589 (1937).
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METTEN, H. Tadpoles out of Season. Nature 147, 390 (1941). https://doi.org/10.1038/147390b0
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DOI: https://doi.org/10.1038/147390b0
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