Background and Objective: Glumerular diseases are among the most prevalent causes of renal chronic insufficiencies. This study aimed to analyze the prevalence of various kinds of glumerulonephritis based on the findings of electron microscope. Materials and Methods: This study had a descriptive retrospective and cross sectional strategy. Slides of patients (124 cases) who had undergone kidn...

In 1878, Ernst Abbe (1) proved that the resolution of the optical microscope is limited by the wavelength of light. This meant that even when immersion optics and ultraviolet light are used, the smallest detail that can ever be resolved optically is of the order of 100 millimicrons, or 10 angstroms. No means were conceived of resolving finer detail until two discoveries were made: (i) the wave ...

Relatively few malignant neoplasms have been described in amphibia. The one that has been studied most extensively is the Luck6 renal adenocarcinoma of the frog, Rana pipiens. This malignant tumor occurs in from two to four per cent of frogs of this species, collected in the Lake Champlain region of northern Vermont and adjoining areas of Quebec. In a series of papers Luck6 described its histop...

The Scanning Confocal Electron Microscope, is an instrument which permits the observation and characterization of sub-surface structures of thick, optically opaque materials at nanometer level resolutions. The instrument merges the capabilities of the scanning, transmission and x-ray microscopes, and achieves unprecedented resolutions in optically dense materials, by implementing the technology...