Download Atlas of Xenopus Development by G. Bernardini PDF

By G. Bernardini

Developmental biology draws scientists from many various components of biology, and the amphibian Xenopus holds a unique position one of the organisms studied as a version of vertebrate improvement. in the past, no lately released atlas existed to help researchers and scholars coming to the Xenopus embryo for the 1st time.
The current publication satisfies this desire. With its synthesizing process and its beneficiant provision of lovely scanning, transmission, and light-weight microscopy pictures, this specific quantity should be a typical reference not just for developmental biologists yet for all scholars of embryology, histology, and comparative anatomy.

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Atlas of Xenopus Development

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Figures 33 and 34 give a general view of the evolution of the external morphology of a larva at this stage. 39 Atlas of XCI/OPUS Development d e f9 b C h I I 29 22 b Fig. 32a-j. Transverse histological sections of the 2-day-old larva (b-j), cut as shown in a (x 120) (32i x 800). 1, Cardiogenic area; 2, cement gland; 3, diencephalon; 4, dorsal fin; 5, external gill; 6, foregut; 7, fourth ventricle; 8, glomus; 9, heart; 10, hindgut; 11, hypochord; 12, hypothalamus; 13,lens; 14, liver diverticulum; 15, mesencephalon; 16, midgut; 17, notochord; 18, olfactory pit; 19, otic vesicle; 20, parachordal cartilage; 21, pharynx; 22, prosencephalon; 23, pronephric tubules; 24, Rathke's pouch; 25, retina; 26, rho mb encephalon; 27, somite; 28, spinal cord; 29, tapetum nigrum; 30, ventral fin; 31, yolky endodermal cells; 32, dorsal aorta; 33, lateral mesoderm 40 Two-Day-Old Larva "0 41 Atlas of Xenopus Development ...

35d cuts through the eyes and displays their connection to the diencephalon. The eyes are weH differentiated with a pigmented retina (tapetum nigrum) and a sensorial retina with its different neuronal layers. The optic cup encloses the crystalline lens, which, in some cases protrudes due to a fixation artifact. The eyes are enveloped by the choroidal and scleral coats. The pharynx, ventral to the encephalon, is surrounded by cartilaginous and muscular structures. h a Fig. 35a-h. Transverse histological sections of a 3-dayold larva, cut as shown in a (bar: lOOflm).

The side view (c) shows the olfactory pit (see enlargement in e) and the mouth, better seen in d, where it shows epithelial continuity with the external surface. 34a-f. SEM images of a specimen of the same age as that in Fig. 33, but slightly further on in its development. a Lateral view of the head; b enlarged view of the external gills; c ventral view of the head; d enlarged view of the cement gland. (a x 70, b x400, CX 80, dx400) Three-Day-Old Larva We next examine a 3-day-old larva (stages 4041) that is approximately 7 mm long.

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