. The elements of experimental embryology. Embryology, Experimental; Embryology. rhomb opt. st. opt. c Fig. 93 Self-differentiation in fragments of the vertebrate embryo. The head-region of a 24-hour chick embryo was grafted on to the chorio-allantois of another egg and allowed to develop for 4 days. Above, eye-region enlarged. Below, longitudinal section. It differentiated the main regions of the brain {rhomb. rhombencephalon ; Twj;^/.myelencephalon; ;/.6. fore-brain; e^.epiphysis ; dibulum), together with an eye showing optic stalk (), optic cup (opt.
. The elements of experimental embryology. Embryology, Experimental; Embryology. rhomb opt. st. opt. c Fig. 93 Self-differentiation in fragments of the vertebrate embryo. The head-region of a 24-hour chick embryo was grafted on to the chorio-allantois of another egg and allowed to develop for 4 days. Above, eye-region enlarged. Below, longitudinal section. It differentiated the main regions of the brain {rhomb. rhombencephalon ; Twj;^/.myelencephalon; ;/.6. fore-brain; e^.epiphysis ; dibulum), together with an eye showing optic stalk (), optic cup (), and lens, /; blood-vessel. The histogenesis was normal, but the form-differen- tiation, notably of the eye, and also of the brain (note b. bar across cavity of fore- brain), abnormal in many respects. (From Murray and Huxley, Exp. Biol. Ill, 1925.). 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 Huxley, Julian, 1887-1975; De Beer, Gavin, Sir, 1899-1972. New York [Hafner Pub. Co. ]
Size: 1928px × 1295px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectembryology
