Microbiology
General Microbiology Pa 1 (History, Microscopy, Stains and Structure and Physiology of Bacteria)
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Stain used in electron microscopy
High-Yield Explanation
Phosphotungstic acid is electron dense, opaque for electrons. It is a common negative stain for viruses, nerves, polysaccharides and other biological tissue materials for imaging by an Electron microscope.