The Cell Theory, Past and Present1
1890; Nature Portfolio; Volume: 43; Issue: 1098 Linguagem: Inglês
10.1038/043031a0
ISSN1476-4687
Autores Tópico(s)Magnetic and Electromagnetic Effects
ResumoII. THE continued investigations into the structure of cells, both in plants and animals, led to modifications in the conception of their morphology. Hugo von Mohl announced that he had discovered (Botanische Z'eitung, translated by A. Henfrey in Taylor's “Scientific Memoirs,” vol. iv., 1846) in the vegetable cell, after being acted on by alcohol and iodine, a thin nitrogenous membrane distinct from and applied to the inner surface of the cellulose wall of the cell, which he named the primordial utricle. He regarded it as forming a vesicle within the cell wall, and containing the contents and the nucleus. By subsequent observers it has been shown that the primordial utricle is nothing more than a thin layer of protoplasm lying close to the cellulose wall, and inclosing the sap cavity of the cell.
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