. The cell in development and inheritance. Cells. B /. Fig. 35. — Leucocytes or wandering-cells of the salamander. [Heidenhain.] A. Cell with a single nucleus containing a very coarse network of chromatin and two nucleoli (plasmosomes) ; s. permanent aster, its centre occupied by a double centrosome surrounded by an attraction-sphere. B. Similar cell, with double nucleus; the smaller dark masses in the latter are oxychromatin-granules (linin), the larger masses are basichromatin (chromatin proper). the shortening and thickening of these rays as the daughter-chromo- somes diverge. In all these
. The cell in development and inheritance. Cells. B /. Fig. 35. — Leucocytes or wandering-cells of the salamander. [Heidenhain.] A. Cell with a single nucleus containing a very coarse network of chromatin and two nucleoli (plasmosomes) ; s. permanent aster, its centre occupied by a double centrosome surrounded by an attraction-sphere. B. Similar cell, with double nucleus; the smaller dark masses in the latter are oxychromatin-granules (linin), the larger masses are basichromatin (chromatin proper). the shortening and thickening of these rays as the daughter-chromo- somes diverge. In all these operations the behaviour of the rays is precisely like that of muscle-fibres ; and it is difficult to study Boveri's beautiful figures and clear descriptions without sharing his conviction that "of the contractility of the fibrillae there can be no ; ^ Very convincing evidence in the same direction is afforded by pigment-cells and leucocytes or wandering-cells, in both of which there is a very large permanent aster (attraction-sphere) even in the resting-cell. The structure of the aster in the leucocyte, where it was first discovered by Flemming in 1891, has been studied very 1 '88, 2, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York : The Macmillan company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcells, bookyear1896
