File:Feli1939 plate41.jpg - Revision history

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Z8600021 at 11:54, 13 November 2018

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	'''g''', section of the same explant fixed after 2 days’ cultivation. Note the carbon particles in the ectoderm and subjacent tissue. (Zenker; haematoxylin and chromatrop. x 51.)		'''g''', section of the same explant fixed after 2 days’ cultivation. Note the carbon particles in the ectoderm and subjacent tissue. (Zenker; haematoxylin and chromatrop. x 51.)


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Z8600021 at 11:53, 13 November 2018

2018-11-13T11:53:55Z

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	==Plate 41==		==Plate 41==

	Fig. 35. a, transverse section through the ventro-lateral body wall of an 8-day budgerigar embryo (stage 2, Part I). The ventral body wall, including the ventral margins of the sternal plates, has been excised and explanted in vitro. (Zenker; haematoxylin and chromatrop. x51.) 6, the ventral body wall removed from the embryo shown in fig. 35a, photographed 2 hr. after ~~explanta- tion~~. Four patches of gas black have been laid on the surface of the tissue. ( x 22.) c, same explant photographed after 48 hr. in vitro. Note that the four patches of gas black have moved almost to the mid-line. The dotted line indicates the level of the section shown in fig. 35d. (x 22.) d, section of the same explant, fixed after 2 days’ growth. Some of the particles of gas black are incorporated in the skin and some in the underlying connective tissue. The edges of the sternal plates are seen as two rods of cartilage connected by a thick sheet of flattened cells. Note that the margin of the explant extends laterally far beyond the cartilaginous rods. (Zenker; haematoxylin and chromatrop. x51.) e, explant of supra-costal tissue from the same embryo and grown in the same watch-glass as the preceding explant of ventral body wall. Four patches of gas black have been laid on the ectoderm. Photographed shortly after explantation. ( x 25.) J, same explant after 48 hr. in vitro. The carbon marks have not moved together. The dotted line indicates the position of the section shown in fig. 35g. (x 22.) g, section of the same explant fixed after 2 days’ cultivation. Note the carbon particles in the ectoderm and subjacent tissue. (Zenker; haematoxylin and chromatrop. x 51.)		Fig. 35.

			'''a''', transverse section through the ventro-lateral body wall of an 8-day budgerigar embryo (stage 2, Part I). The ventral body wall, including the ventral margins of the sternal plates, has been excised and explanted in vitro. (Zenker; haematoxylin and chromatrop. x51.)

			'''b''', the ventral body wall removed from the embryo shown in fig. 35a, photographed 2 hr. after explantation. Four patches of gas black have been laid on the surface of the tissue. ( x 22.)

			'''c''', same explant photographed after 48 hr. in vitro. Note that the four patches of gas black have moved almost to the mid-line. The dotted line indicates the level of the section shown in fig. 35d. (x 22.)

			'''d''', section of the same explant, fixed after 2 days’ growth. Some of the particles of gas black are incorporated in the skin and some in the underlying connective tissue. The edges of the sternal plates are seen as two rods of cartilage connected by a thick sheet of flattened cells. Note that the margin of the explant extends laterally far beyond the cartilaginous rods. (Zenker; haematoxylin and chromatrop. x51.)

			'''e''', explant of supra-costal tissue from the same embryo and grown in the same watch-glass as the preceding explant of ventral body wall. Four patches of gas black have been laid on the ectoderm. Photographed shortly after explantation. ( x 25.)

			'''f''', same explant after 48 hr. in vitro. The carbon marks have not moved together. The dotted line indicates the position of the section shown in fig. 35g. (x 22.)

			'''g''', section of the same explant fixed after 2 days’ cultivation. Note the carbon particles in the ectoderm and subjacent tissue. (Zenker; haematoxylin and chromatrop. x 51.)

Z8600021: Z8600021 uploaded a new version of File:Feli1939 plate41.jpg

2018-11-13T11:51:10Z

Z8600021 uploaded a new version of File:Feli1939 plate41.jpg

← Older revision	Revision as of 22:51, 13 November 2018
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Z8600021 at 11:50, 13 November 2018

2018-11-13T11:50:45Z

← Older revision		Revision as of 22:50, 13 November 2018
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			==Plate 41==

			Fig. 35. a, transverse section through the ventro-lateral body wall of an 8-day budgerigar embryo (stage 2, Part I). The ventral body wall, including the ventral margins of the sternal plates, has been excised and explanted in vitro. (Zenker; haematoxylin and chromatrop. x51.) 6, the ventral body wall removed from the embryo shown in fig. 35a, photographed 2 hr. after explanta- tion. Four patches of gas black have been laid on the surface of the tissue. ( x 22.) c, same explant photographed after 48 hr. in vitro. Note that the four patches of gas black have moved almost to the mid-line. The dotted line indicates the level of the section shown in fig. 35d. (x 22.) d, section of the same explant, fixed after 2 days’ growth. Some of the particles of gas black are incorporated in the skin and some in the underlying connective tissue. The edges of the sternal plates are seen as two rods of cartilage connected by a thick sheet of flattened cells. Note that the margin of the explant extends laterally far beyond the cartilaginous rods. (Zenker; haematoxylin and chromatrop. x51.) e, explant of supra-costal tissue from the same embryo and grown in the same watch-glass as the preceding explant of ventral body wall. Four patches of gas black have been laid on the ectoderm. Photographed shortly after explantation. ( x 25.) J, same explant after 48 hr. in vitro. The carbon marks have not moved together. The dotted line indicates the position of the section shown in fig. 35g. (x 22.) g, section of the same explant fixed after 2 days’ cultivation. Note the carbon particles in the ectoderm and subjacent tissue. (Zenker; haematoxylin and chromatrop. x 51.)


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