The cell in development and inheritance . Fig. 49. — 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) ; J. permanent aster, its centre occupied by a double centrosome surrounded byan attraction-sphere. B. Similar cell, with double nucleus ; the smaller dark masses in the latterare oxychromatin-granules (linin), the larger masses are basichromatin (chromatin proper). by Heidenhain to represent the contractile elements by means ofwhich the cell changes its form and creeps about.
The cell in development and inheritance . Fig. 49. — 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) ; J. permanent aster, its centre occupied by a double centrosome surrounded byan attraction-sphere. B. Similar cell, with double nucleus ; the smaller dark masses in the latterare oxychromatin-granules (linin), the larger masses are basichromatin (chromatin proper). by Heidenhain to represent the contractile elements by means ofwhich the cell changes its form and creeps about. A similar con-clusion was reached by Solger (91) and Zimmermann (93, 2) in thecase of pigment-cells (chromatophores) in fishes. These cells have,in an extraordinary degree, the power of changing their form and ofactively creeping about. Solger and Zimmermann have shown thatthe pigment-cell contains an enormous aster, whose rays extend inevery direction through the pigment-mass, and it is almost impos-sible to doubt that the aster is a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1902
