ERYTHROPOIESIS: AN ELECTRON MICROSCOPICAL STUDY

Ultrastructural characteristics of Trichomonas vaginalis. An electron microscopical study.

A Comparative Electron Microscopical Study of Rna from Different Sources

Electron micrographs of ribosomal RNA from Escherichia coli, microsomal RNA from calf, rat, and chick liver, Bacillus cereus RNA and E. coli soluble RNA are presented. Filaments of about 10 A in diameter could be observed in preparations obtained from aqueous solutions of high molecular weight RNA. When ammonium acetate solutions were used a tendency for coiling and aggregation was observed. E....

An Electron Microscopical Study of the Interaction of Bone With Growth Hormone Loaded Bone Cement

Growth hormone was incorporated into Polymethylmethacrylate (PMMA) with a view to improving the quality of the bone-cement interface. Growth hormone was released from the PMMA and delivered to the cells at the bone-cement interface . The in vivo response to the growth hormone loaded cement was compared to the plain cement , using light microscopy, transmission electron microscopy and scanning e...

Electron microscopical findings in hypertrophied human ventricle.

The, normal ultrastructure of the human myocardium is fairly well documented (Porter and Bonneville, 1963; Stenger and Spiro, 1961; Burdette and Ashford, 1963; Lannigan and Zaki, 1966) and some of the prominent subcellular changes have also been described (Burgos and Rodriguez-Echandta, 1966; Alexander, 1967). We should like here to present the ultrastructural features observed in hypertrophied...

Electron microscopical investigation of asbestos fibers

Examination of asbestos fibers by electron microscopical techniques enables the observer to distinguish among the fiber types by morphological and structural characteristics. Chrysotile asbestos fibers are composed of bundles of fibrils. Fibers are often curvilinear with splayed ends. Individual fibrils consist of a central capillary defined by an electron dense crystalline wall. With increasin...