. The cell in development and inheritance. Cells. Fig. 7— Spermatogonia of the salamander. [Meves.] Above, two cells showing large nuclei, with linin-threads and scattered chromatin-granules ; in each cell an attraction-sphere with two centrosomes. Below, three contiguous spermatogonia, showing chromatin-reticulum, centrosomes and spheres, and sphere-bridges. be surrounded ; but it must be remembered that the cell-wall in some cases arises by a direct transformation of the protoplasmic substance, and that it often retains the power of growth by intussusception like living matter. It is unfortu
. The cell in development and inheritance. Cells. Fig. 7— Spermatogonia of the salamander. [Meves.] Above, two cells showing large nuclei, with linin-threads and scattered chromatin-granules ; in each cell an attraction-sphere with two centrosomes. Below, three contiguous spermatogonia, showing chromatin-reticulum, centrosomes and spheres, and sphere-bridges. be surrounded ; but it must be remembered that the cell-wall in some cases arises by a direct transformation of the protoplasmic substance, and that it often retains the power of growth by intussusception like living matter. It is unfortunate that some confusion has arisen in the use of the word protoplasm. When Leydig, Schultze, Briicke, De Bary, and other earlier writers spoke of "protoplasm," they had in mind only the substance of the cell-body, not that of the nucleus. Strasburger,. 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
Size: 2516px × 993px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
