Abstract
THE recent report by Lindahl1 that the micromeres in certain sea urchins give rise to cells which contain the haploid number of chromosomes has far-reaching implications. Since the mesenchymal cells are the principal derivatives of the micromeres, it now seems pertinent to examine the chromosome numbers in such cells in animals of different groups.
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References
Lindahl, P. E., Nature, 171, 437 (1953).
Fankhauser, G., (personal communication).
Hsu, T. C., J. Hered., 43, 167 (1952).
Briggs, R. W., J. Exp. Zool., 106, 237 (1947).
Parmenter, C. L., J. Gen. Physiol., 8, 1 (1925).
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GREEN, E. Regular Occurrence of the Haploid Number of Chromosomes in Mesenchymal Cells of the Tail Tip of Rana Pipiens Tadpoles. Nature 172, 766–767 (1953). https://doi.org/10.1038/172766a0
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DOI: https://doi.org/10.1038/172766a0
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