Abstract
IT is generally supposed1 that there is a close relationship between the sex chromosomes and the nucleoli in most species, though the evidence for this in mammals is scanty2. It is nearly certain that the sex chromatin body3 found in most nuclei in females of some species, including man, represents the heterochromatin of the X chromosome pair4. The demonstration of a persistent connexion between these bodies in some nuclei may serve to support both hypotheses. Reitalu5 has described such a connexion in human fœtal liver; the matter seems important enough to justify this further description, based on observations, made in ignorance of Reitalu's, of similar structures seen elsewhere.
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SERR, D., FERGUSON-SMITH, M., LENNOX, B. et al. Representation of the X Chromosome in Intermitotic Nuclei in Man. Nature 182, 124 (1958). https://doi.org/10.1038/182124a0
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DOI: https://doi.org/10.1038/182124a0
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