. The development of the chick; an introduction to embryology. Birds -- Embryology. w. ^u \s M'lr. Fig. 144. — Transverse section through the cervical swelhng of the spinal cord of a chick, middle of the fifth day. (After V. Kiipffer.) bl. v., Blood vessel. C. a., Anterior commissure. C, Cen- tral canal, d., Group of axones at the level of the dorsal root. Ep., Ependyma. N'bl., Neuroblasts. V. Ventral column of white matter. ventral roots. The dorsal column begins first as a bundle of fibers at the entrance of the fibers of the dorsal root (Fig. 144). Subsequently, other fibers come in this re

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. The development of the chick; an introduction to embryology. Birds -- Embryology. w. ^u \s M'lr. Fig. 144. — Transverse section through the cervical swelhng of the spinal cord of a chick, middle of the fifth day. (After V. Kiipffer.) bl. v., Blood vessel. C. a., Anterior commissure. C, Cen- tral canal, d., Group of axones at the level of the dorsal root. Ep., Ependyma. N'bl., Neuroblasts. V. Ventral column of white matter. ventral roots. The dorsal column begins first as a bundle of fibers at the entrance of the fibers of the dorsal root (Fig. 144). Subsequently, other fibers come in this region and gradually extend towards the dorsal middle line, displacing the ependyma. 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 Lillie, Frank Rattray, 1870-1947. New York, Holt

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