. A manual of zoology. Zoology. Fig. a3.—Section througll the ovary of a new-born child. (After Waldeyer.) i/f, germinal epithelium; j-ie, primitive eg^ in the germinal e]jithelium; />, egg-pouch; (/. egg-nest e(jTjstricted off from the pouchlike growth {p); /, single egg with fol- licle; x\ blood-vessel. therefore must necessarily develop their products in ej^ithelium. In other words, sexual and epithelial cells are the oldest elements of the animal body, and hence very early came into relation with one another. Sexual epithelium (or, as it is often called, germinal epithe- lium) l
. A manual of zoology. Zoology. Fig. a3.—Section througll the ovary of a new-born child. (After Waldeyer.) i/f, germinal epithelium; j-ie, primitive eg^ in the germinal e]jithelium; />, egg-pouch; (/. egg-nest e(jTjstricted off from the pouchlike growth {p); /, single egg with fol- licle; x\ blood-vessel. therefore must necessarily develop their products in ej^ithelium. In other words, sexual and epithelial cells are the oldest elements of the animal body, and hence very early came into relation with one another. Sexual epithelium (or, as it is often called, germinal epithe- lium) like glandular epithelium has a tendency to grow into tlie subepithelial tissues in the form of isolated or branching tubes. 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 Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
Size: 1669px × 1498px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
