. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LEIGH HOADLEY. The chambers in this case are well developed. A definite anterior and posterior chamber are present separated by the lens, the lenticular zone, and a thin layer of mesenchymatous tissue which is covered with an endothelium. The entire anterior chamber is lined by this tissue. The posterior chamber is large and is lined throughout by the retina save at the anterior border, where the lens and ciliary processes occur, as mentioned above. It is not regular, however, for at intervals, as can be seen (Fig. 2), the r
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LEIGH HOADLEY. The chambers in this case are well developed. A definite anterior and posterior chamber are present separated by the lens, the lenticular zone, and a thin layer of mesenchymatous tissue which is covered with an endothelium. The entire anterior chamber is lined by this tissue. The posterior chamber is large and is lined throughout by the retina save at the anterior border, where the lens and ciliary processes occur, as mentioned above. It is not regular, however, for at intervals, as can be seen (Fig. 2), the retina has proliferated to such an extent that there are folds entering the cavity. In no place do these obliterate the chamber as in some of the grafts. The retina and the tapetum are well formed, though where con- volutions of the retina occur, the tapetum does not always follow. On close examination, the tapetum appears to be formed of three or four layers of heavily pigmented cells arranged very closely. All of the layers of the retina are present (Fig. 3) but the layer of Mesen — St In Nuc . Nuc. FIG. 3. Cross section of retina from same graft as Fig. 2. (X 180.) , blood corpuscles. , blood vessels. Cart., cartilage. , ganglionic layer. , inner molecular layer. , inner nuclear layer. Memb. , external membrana limitans. Mesen., mesenchyme. , outer molecular layer. , outer nuclear layer. , stratum opticum. Otlu-r abbreviations as in Fig. 2. rods and cones shows but little differentiation, a condition cor- responding to that found in normal eyes of chicks of the same age. Bordering the cavity is the very thin membrana limitans interna. This separates the cavity of the eye from the stratum opticum which lies just beneath it. This is clear an<l ea-ily distinguished from the sparsely nucleated outer ganglionic layer. Bet\\een ihi-. Please note that these images are extracted from scanned p
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
