. The cell in development and inheritance. Cells. I yr>. \ m ?• .V. • 1^: §^*•. Fig. 19. — Section through a nephridial cell of the leech, C/epsh/e (drawn b}'Arnold Graf from one of his own preparations). The centre of the cell is occupied by a large vacuole, filled with a watery liquid. The cyto- plasm forms a very regular and distinct reticulum with scattered microsomes which become very large in the peripheral zone. The larger pale bodies, lying in the ground-substance, are excretory granules { metaplasm). The nucleus, at the right, is surrounded by a thick chromatic mem- brane, is t
. The cell in development and inheritance. Cells. I yr>. \ m ?• .V. • 1^: §^*•. Fig. 19. — Section through a nephridial cell of the leech, C/epsh/e (drawn b}'Arnold Graf from one of his own preparations). The centre of the cell is occupied by a large vacuole, filled with a watery liquid. The cyto- plasm forms a very regular and distinct reticulum with scattered microsomes which become very large in the peripheral zone. The larger pale bodies, lying in the ground-substance, are excretory granules { metaplasm). The nucleus, at the right, is surrounded by a thick chromatic mem- brane, is traversed by a very distinct linin-network, contains numerous scattered chromatin- granules, and a single large nucleolus within which is a vacuole. Above are two isolated nuclei showing nucleoli and chromatin-granules suspended in the linin-threads. other reagents. The comparison leaves no doubt that the normal structures are in this case very perfectly preserved, though the sec- tions give at first sight an appearance somewhat different from that. 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 Macmillan
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
