SYN: karyosome.
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chro·mo·cen·ter 'krō-mə-.sent-ər n a densely staining nuclear body associated with the chromatin of some cells
chro·mo·cen·tric .krō-mə-'sen-trik adj
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chro·mo·cen·ter (kroґmo-sen″tər) [chromo- + center (def. 1)] a fused, condensed mass of heterochromatin representing a point of attachment of polytene chromosomes.Medical dictionary. 2011.