Abstract
THE ability of the placenta to discriminate between strontium and calcium has been demonstrated by Comar et al. in double tracer experiments using rats and pigs1. They found that the strontium/calcium ratio of the fœtus was considerably less than that of the mother. In the case of rats, the strontium/calcium ratio of the fœtus was 0.55, and 0.65 times that of the mother, while for rabbits the fœtus had a strontium/calcium ratio 0.49 times that of the mother.
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References
Wasserman, R. H., Comar, C. L., Nold, M. M., and Lengemann, F. W., Amer. J. Physiol., 189, 1 (1957).
Bryant, F. J., and Loutit, J. F., Rep. No. AERE-R 3718 (London, 1961).
Dixon, W. J., Ann. Math. Stat., 22, 68 (1951).
Comar, C. L., Ann. N.Y. Acad. Sci., 64, 281 (1956).
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RIVERA, J. Strontium – Calcium Discrimination by the Human Placenta. Nature 200, 269–270 (1963). https://doi.org/10.1038/200269a0
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DOI: https://doi.org/10.1038/200269a0
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