Quantitative Studies of Oncornaviruses in Thin Sections

Image Analysis in Quantitative Particle Studies of Archaeological Ceramic Thin Sections

Thin-section petrography is a crucial tool for the study of archaeological ceramics, and in recent years, image analysis has emerged as a powerful quantitative enhancement of that tool. Exploratory applications of image analysis to archaeological ceramic thin sections, and related work by sedimentary geologists, have indicated its usefulness to the field. In this paper, we first present the res...

Thin Sections

Knowledge of the thickness of sections is important for proper interpretation of electron micrographs. Therefore, the thicknesses of sections of n-butyl methacrylate polymer were determined by ellipsometry, and correlated with the color shown in reflected light. The results are: gray, thinner than 60 mmicro; silver, 60 to 90 mmicro; gold, 90 to 150 mmicro; purple, 150 to 190 mmicro; blue, 190 t...

Educational Meteorite Thin Sections

Decalcification of Thin Sections for Electron Microscope Studies of Crystal-matrix Relationships in Mollusc Shells

This note reports a method for studying the relationship between crystals and the organic matrix in calcified structures by means of decalcification of single thin sections. The mollusc shell has been used in developing the method. Electron microscope studies of the organic matrix of the mollusc shell have been carried out by making replicas of the normal or etched shell surfaces (Gr5goire, 195...

Studies by Electron Microscopy of Thin Sections of Infectious Myxomatosis in Rabbits

Rabbits were inoculated with the C.P.M. strain of myxoma virus and the resulting subcutaneous tumors were fixed, embedded, and sectioned for observation with the electron microscope. Both round cells and the typical stellate myxomatous cells were observed in addition to changes in the collagen pattern at the intercellular spaces. The cytoplasm of the cells showed a great number of bodies of var...