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of Cytology of the Carnoy Institute at Louvain Belgiumof preparations
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acid agar alcohol aluminium amyl acetate aperture applied bacteria beam beryllium cells cellulose centre centrifuge Chapter chromium clean coated collodion concentration contrast cover-slip deposit described desiccator diameter dilute dioxan disc dish dispersion distilled water dried drop drying edge effect electron microscope electrostatic precipitator embedded ethyl ethyl cellulose evaporated examined exposure filament floating floating film fraction gauze gelatine glass slide heating hole immersed instrument layer lens liquid magnification material medium metal method microgram microtome minutes mounted needle nitrocellulose object obtained optical microscope organisms oxide p.c. solution phosphotungstic acid photographic Phys placed plastic plate plug polystyrene powder prepared removed resolving limit ring tool rotifers rubber salt sample Scotch tape sections separated shadowcasting shadowing silica silica films solvent specimen grid staining suitable supporting film surface suspension technique temperature thermal precipitator thickness thin film tissue vacuo vacuum vapour virus Viruses washed wire xylene