scholarly journals Microvascularization of the Pancreas in Larval and Adult Xenopus laevis – Histomorphology and Scanning Electron Microscopy of Vascular Corrosion Casts

2016 ◽  
Vol 76 (1) ◽  
pp. 35-52
Author(s):  
J. P. Höpner ◽  
A. Lametschwandtner
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Xenopus Laevis ◽  
Scanning Electron

A different type of amphibian mesoderm morphogenesis in Ceratophrys ornata

Development ◽  
1993 ◽  
Vol 117 (1) ◽  
pp. 307-317 ◽  
Author(s):  
S.M. Purcell ◽  
R. Keller
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Layer ◽  
Xenopus Laevis ◽  
Dorsal Surface ◽  
Time Lapse ◽  
Surface Epithelium ◽  
Histological Sections ◽  
Fourth Zone ◽  
Scanning Electron

Ceratophrys ornata, the Argentinean horned frog, has a significantly different pattern of early morphogenesis than does the most studied amphibian, Xenopus laevis. Time-lapse videomicroscopy, scanning electron microscopy, histological sections and lineage tracers have shown that, in C. ornata, some prospective notochord, somite and tailbud mesoderm cells leave the surface epithelium of the archenteron by ingression. After gastrulation, SEM reveals cells with constricted apices and a bottle shape in three zones on the archenteron roof and in a fourth zone around the blastopore. Prospective somitic tissue ingresses first from two lateral zones, followed by ingression of prospective notochord from the medial zone and tailbud mesoderm from the circumblastoporal zone. This is unlike X. laevis, in which no cells with constricted apices are present on the dorsal surface of the archenteron, nor do any cells ingress into the deep mesodermal layers from the surface layer.

scholarly journals Microvascular Anatomy of Extrahepatic Bile Ducts in Adult South African Clawed Toad, Xenopus laevis Daudin: Scanning Electron Microscopy of Vascular Corrosion Casts and Correlative Light Microscopy

2009 ◽  
Vol 15 (S2) ◽  
pp. 986-987
Author(s):  
A Lametschwandtner ◽  
U Lametschwandtner ◽  
H Bartel ◽  
C Radner ◽  
B Minnich
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Xenopus Laevis ◽  
Light Microscopy ◽  
South African ◽  
Bile Ducts ◽  
Corrosion Casts ◽  
Extrahepatic Bile Ducts ◽  
Scanning Electron ◽  
Vascular Corrosion Casts

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009

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