. Elements of histology. Histology. Cells. the spinal cord of about ^.^o of 'ii^ inch, or to that of multinucleated cells of the bone marrow—myeloplax— some of which suri)ass in size even the ganglion cells. The same holds good of the nucleus. Between the nucleus of a ganglion cell of about ^\-^ to yaVo ^^ ^^ inch in diameter and the nucleus of a white blood corpuscle of about -goVo ^^ tit wo ^^ ^^^ inch and less there are all intermediate sizes. 6. Pi-otoplasiii or cytoplasm is a transparent homogeneous or granular-looking substance. On very careful examin- ation with good and high powers, an
. Elements of histology. Histology. Cells. the spinal cord of about ^.^o of 'ii^ inch, or to that of multinucleated cells of the bone marrow—myeloplax— some of which suri)ass in size even the ganglion cells. The same holds good of the nucleus. Between the nucleus of a ganglion cell of about ^\-^ to yaVo ^^ ^^ inch in diameter and the nucleus of a white blood corpuscle of about -goVo ^^ tit wo ^^ ^^^ inch and less there are all intermediate sizes. 6. Pi-otoplasiii or cytoplasm is a transparent homogeneous or granular-looking substance. On very careful examin- ation with good and high powers, and especially ^vhen examined with c e r t a i n reagents, in many, but not in all, instances it shows a more or less definite structure (Fig. 6), composed of fibrils, more or less regular, and in some instances grouped into a honeycomhed re- ticulum, sjyongioplasm, in the meshes of which is a homogeneous substance, /njaloplasm (Leydig). The closer the meshes of the reticulum, the less there is of this interstitial substance, and the more regularly granular does the reticulum appear. In the meshes of the reticulum, however, may be included larger or smaller granules of fat, pigment, or other material. Water makes protoplasm swell up and ultimately this becomes disintegrated ; so also act dilute acids and alkalies. All substances that coagulate proteids have the same effect on Fig. 6.—Anictboid pale leucocyte of the newt, showing the nuclei embedded in the cell proto- Ijlasni—this latter consisting of spongioplasm and hyaloplasm. (After Scho/er.). 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 Klein, E. (Edward), 1844-1925; Edkins, John Sydney, b. 1865. Philadelphia : Lea Brothers
Size: 1883px × 1327px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphiladelphialeabro
