karyotinn.
/ˈkarɪəʊtɪn/ Biology.
The stainable material of a cell nucleus; the substance of which the nuclear reticulum is composed.
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the world > life > biology > substance > cell > cell organelle or contents > [noun] > nucleus > substances or structures of
nuclein1871
nucleoplast1876
nucleoplasm1882
plastin1883
nebenkern1885
nuclear sap1887
chromosome1889
karyotin1925
chromocentre1926
Barr body1961
1925 E. B. Wilson Cell (ed. 3) i. 90 Such considerations led Lundegårdh ('10) to propose that the term ‘chromatin’ be replaced by ‘karyotin’ (caryotin), the substance thus designated appearing in either a basichromatic or an oxyphilic phase.
1934 L. W. Sharp Introd. Cytol. (ed. 3) iii. 55 Only future research can decide whether karyotin (‘chromatin’ in the wide sense) is a true chemical compound.
1948 W. Andrew tr. E. D. P. de Robertis Gen. Cytol. vii. 138 Other authors admit the existence of two distinct phases: the karyolymph, which is considered as a colloid sufficiently stable to be precipitated only with acids and fixatives, and the karyotin, a more labile and complex colloid dispersed in the karyolymph, which would precipitate with great facility.
1966 D. M. Kramsch tr. E. Grundmann Gen. Cytol. ii. 66 The nucleus was..regarded as a solution, a sol in which little droplets, the so-called karyotine droplets, representing a somewhat more solid ‘phase’, were dispersed.
This entry has not yet been fully updated (first published 1976; most recently modified version published online December 2020).
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n.1925