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 assist researchers and scholars coming to the Xenopus embryo for the 1st time.
The current publication satisfies this desire. With its synthesizing strategy and its beneficiant provision of lovely scanning, transmission, and light-weight microscopy pictures, this detailed quantity might be a customary reference not just for developmental biologists yet for all scholars of embryology, histology, and comparative anatomy.
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Additional info for Atlas of Xenopus Development
23b note the changes in the eye and cement gland shape, the dorsal fin and the anus. The top view in Fig. 24 shows up the dorsal fin and the cephalocaudal elongation of a typical tail bud stage embryo. A few ho urs later (Fig. 26) the cephalic region of the embryo shows, on the external surface, the first sign of the olfactory placodes. A slight depression becomes visible in a central position just over the cement gland: the stomodeum. A lateral view reveals a first sign of the external gills. Figure 27 provides a detail of the ventral fin ending at the anus level.
Normal table of Xenopus laevis by Nieuwkoop and Faber, 1967) subdivided in prosencephalon or forebrain, mesencephalon or midbrain and rhombencephalon or hindbrain. Later a narrowing divides the prosencephalon into a telencephalon and a diencephalon, and similarly the rhombencephalon divides in metencephalon and myelencephalon. The formation of the eye anlagen starts during neurulation with two symmetrical outgrowths in the anterior part of the neural plate. With the closure of the neural tube the eye anlagen become lateral pockets called optic or eye vesicles (Fig.
The head (b) has a roundish mouth. 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.