cytoblastn.

1839 Philos. Trans. (Royal Soc.) 129 358 The nucleus had been known to other botanists..; but its property of originating the ‘cell’ was the discovery of Schleiden, who from this property proposes to denominate it the ‘Cytoblast’.

1861 R. Bentley Man. Bot. i. i. 18 Almost all young cells contain one or more bodies called Nuclei or Cytoblasts.

1874 R. Brown Man. Bot. i. i. 22 Schleiden, on account of the belief common among many physiologists that it [sc. the nucleus] plays an important part in the production of young cells, has called it the cytoblast, and describes it as composed of a number of extremely little corpuscles of indeterminate form.

1939 Amer. Naturalist 73 527 All biologists are now agreed that there is but one method of cell formation, but that it occurs by division of a preexisting cell—not by the aggregation of mucus granules in the cytoplasm to form first a nucleole and cytoblast and then the cell.

1999 Bot. Rev. 65 78 Schleiden discussed the cell as the basic unit of life, and then proposed two methods by which he believed cells formed: by the spontaneous formation of cells in certain organic solutions..and by enlargement of ‘cytoblasts’, the nuclei of cells.