The cryogenic version of this technique avoids crystallization while maintaining the true structure of the specimen.
The cryogenic version of this technique avoids crystallization while maintaining the true structure of the specimen. One variant of this technique uses uranyl acetate to produce negative stains, while another variant makes use of sputter-coating with gold. Ernst Ruska first developed this technique, and his brother Helmut was the first to visualize (*) bacteriophages using this technique. The two most common variants of this technique are the scanning and transmission types. For 10 points, name this type of microscopy that uses a beam of the title particles rather than light to closely visualize smaller-than-cellular substances.
The cryogenic version of this technique avoids crystallization while maintaining the true structure of the specimen.
electron microscopy (prompt on “microscopy” before mentioned, accept just “electron” afterwards; accept specific types of electron microscopy; accept word forms)