. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. PARSONS: NASAL EMBRYOLOGY 169 Histologically, there are no essential differences between the unindented and indented nasal placodes. Throughout its early development the nasal epithelium slowly becomes thicker, but the general picture of high columnar epithelium with somewhat. NIPT Figure 42. ThamnopMs 1643 (; MC). Frontal sections through the nasal area. A, section 71; B, 3 sections ventral to A ; and C, 4 ventral to B. 42x. Figure 43. OxyhclxH ;;28 (; MC). Transverse sections through the nasal area. A,
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. PARSONS: NASAL EMBRYOLOGY 169 Histologically, there are no essential differences between the unindented and indented nasal placodes. Throughout its early development the nasal epithelium slowly becomes thicker, but the general picture of high columnar epithelium with somewhat. NIPT Figure 42. ThamnopMs 1643 (; MC). Frontal sections through the nasal area. A, section 71; B, 3 sections ventral to A ; and C, 4 ventral to B. 42x. Figure 43. OxyhclxH ;;28 (; MC). Transverse sections through the nasal area. A, section 166; B, 8 sections posterior to A; and V, 5 posterior to B. 39x. Figure 44. Thamnophia A2 (; EEW). Sagittal section through the nasal area (section 26). 39x. basally located nuclei does not change. The basal position of the nuclei is most marked in the area of indentation, but, as in the previoiLs stage, mitotic figures are concentrated along the external surface of the 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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