The cerebral cortex in congenital hydrocephalus in the H-Tx rat: a quantitative light microscopy study

1991 ◽  
Vol 82 (3) ◽  
pp. 217-224 ◽  
Author(s):  
H. C. Jones ◽  
R. M. Bucknall ◽  
N. G. Harris
Keyword(s):  
Cerebral Cortex ◽  
Light Microscopy ◽  
Microscopy Study ◽  
Congenital Hydrocephalus ◽  
Quantitative Light Microscopy

Structural changes in caudate nucleus, cerebral cortex and hippocampus induced by morphine. Light microscopy study

1987 ◽  
Vol 18 (3) ◽  
pp. 321-325 ◽  
Author(s):  
Guadalupe Tapia-Arizmendi ◽  
Joaquin Garcia-Estrada ◽  
Alfredo Feria-Velasco ◽  
Victor Aleman
Keyword(s):  
Cerebral Cortex ◽  
Light Microscopy ◽  
Caudate Nucleus ◽  
Structural Changes ◽  
Microscopy Study

Light microscopy of the medial wall of the cerebral cortex of the lizardPsammodromus algirus

1984 ◽  
Vol 181 (3) ◽  
pp. 319-331 ◽  
Author(s):  
S. Guirado ◽  
A. de la Calle ◽  
J. C. Davila ◽  
F. Marin-Giron
Keyword(s):  
Cerebral Cortex ◽  
Light Microscopy ◽  
Medial Wall

The Kupffer cell in experimental extrahepatic cholestasis in the rat—a light microscopy, immunohistochemical and electron microscopy study

1986 ◽  
Vol 150 (3) ◽  
pp. 187-194 ◽  
Author(s):  
D. St. John Collier ◽  
James A. Pain ◽  
Derek G. D. Wight ◽  
Penny Lovat ◽  
Michael E. Bailey
Keyword(s):  
Electron Microscopy ◽  
Light Microscopy ◽  
Kupffer Cell ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Extrahepatic Cholestasis

scholarly journals Immunolabeling of grapevine flavescence dorée MLO in salivary glands of Euscelidius variegatus: a light and electron microscopy study.

1990 ◽  
Vol 38 (1) ◽  
pp. 79-85 ◽  
Author(s):  
J Lherminier ◽  
G Prensier ◽  
E Boudon-Padieu ◽  
A Caudwell
Keyword(s):  
Light Microscopy ◽  
Salivary Glands ◽  
Light And Electron Microscopy ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Good Tool ◽  
Tissue Samples ◽  
Thin Sections ◽  
Flavescence Dorée ◽  
Euscelidius Variegatus

Flavescence dorée (FD), a grapevine yellows disease, is caused by a mycoplasma-like organism (MLO). A colloidal gold indirect immunolabeling technique identified MLO in salivary glands of a vector leafhopper, Euscelidius variegatus. After aldehyde fixation, tissue samples were prepared by cryoultramicrotomy or embedding in acrylic resins. Double fixation with aldehydes and osmium retroxide, followed by embedding in epon, was also performed. Thin or semi-thin serial sections were treated with polyclonal anti-FD-MLO rabbit antibodies, then with gold-conjugated anti-rabbit IgG. Labeling was revealed using the silver enhancement technique for light microscopy. MLO in frozen thin sections of glands were efficiently labeled. Optimal results were obtained with 4% paraformaldehyde-0.1% glutaraldehyde fixation and low-temperature embedding in LR White resin. Both scattered MLO and unusual dense forms of MLO were easily detected with the electron-dense gold probe. This method distinguished MLO from other membrane-limited bodies and provided a good tool for studying infection in large regions of FD-infected tissues by light microscopy.

Development of the pulmonary vasculature in newborn lambs: structure-function relationships

1991 ◽  
Vol 70 (3) ◽  
pp. 1255-1264 ◽  
Author(s):  
R. P. Michel ◽  
J. B. Gordon ◽  
K. Chu
Keyword(s):  
Light Microscopy ◽  
Hypoxic Pulmonary Vasoconstriction ◽  
Venous Pressure ◽  
Pulmonary Arteries ◽  
Muscle Thickness ◽  
Pulmonary Vasculature ◽  
Pressure Gradients ◽  
Middle Segment ◽  
Pulmonary Vasoconstriction ◽  
Quantitative Light Microscopy

Our objectives were 1) to describe the quantitative light microscopy and ultrastructure of newborn lamb lungs and 2) to correlate hemodynamic changes during normoxia and hypoxia with the morphology. By light microscopy, we measured the percent muscle thickness (%MT) and peripheral muscularization of pulmonary arteries and veins from 25 lambs aged less than 24 h, 2-4 days, 2 wk, and 1 mo. At the same ages, lungs were isolated and perfused in situ and, after cyclooxygenase blockade with indomethacin, total, arterial (delta Pa), middle (delta Pm), and venous pressure gradients at inspired O2 fractions of 0.28 (mild hyperoxia) and 0.04 (hypoxia) were determined with inflow-outflow occlusion. During mild hyperoxia, delta Pa and delta Pm fell significantly between 2-4 days and 2 wk, whereas during hypoxia, only delta Pm fell. The %MT of all arteries (less than 50 to greater than 1,000 microns diam) decreased, and peripheral muscularization of less than 100-microns-diam arteries fell between less than 4 days and greater than 2 wk. Our data suggest that 1) the %MT of arteries determines normoxic pulmonary vascular resistance, because only arterial and middle segment resistance fell, 2) peripheral muscularization is a major determinant of hypoxic pulmonary vasoconstriction, because we observed a fall with age in peripheral muscularization of less than 100-micron-diam arteries and in delta Pm with hypoxia, and 3) the arterial limit of the middle segment defined by inflow-outflow occlusion lies in 100- to 1,000-microns-diam arteries.

scholarly journals Ontogenetic development of the gastrointestinal tract of African lungfish larvae Protopterus aethiopicus (Heckel 1851): A light microscopy study

2020 ◽  
Vol 51 (12) ◽  
pp. 5074-5083
Author(s):  
Martin Sserwadda ◽  
Nancy Nevejan ◽  
Ronald Ntanzi ◽  
Pieter Cornillie ◽  
Wim Van den Broeck ◽  
...  
Keyword(s):  
Gastrointestinal Tract ◽  
Light Microscopy ◽  
Microscopy Study ◽  
Ontogenetic Development ◽  
African Lungfish ◽  
Protopterus Aethiopicus
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