[A novel method of concentrating bacterial suspensions for transmission electron microscopy]. 1996

L V Didenko, and N D Konstantinova, and Iu M Romanova, and G A Levina, and N V Alekseeva

Presents a new method for making preparations of bacteria and their unculturable forms from suspensions with low concentrations of cells, from 1 x 108 to 1 x 104 per ml. to be examined under transmission electron microscope. The novelty of the method consists in the technique of concentrating bacteria by making a colloid solution consisting of bovine serum albumin and polyethyleneglycol. Associations of protein molecules, polyethyleneglycol, and bacteria, forming in the solution, are sedimented by centrifugation after 48-hour incubation at 4 degrees C. The solidity of the resultant macroscopic sediment is sufficient for studying the cells contained in it under transmission electron microscope.

UI MeSH Term Description Entries
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D001431 Bacteriological Techniques Techniques used in studying bacteria. Bacteriologic Technic,Bacteriologic Technics,Bacteriologic Techniques,Bacteriological Technique,Technic, Bacteriological,Technics, Bacteriological,Technique, Bacteriological,Techniques, Bacteriological,Bacteriologic Technique,Bacteriological Technic,Bacteriological Technics,Technic, Bacteriologic,Technics, Bacteriologic,Technique, Bacteriologic,Techniques, Bacteriologic
D012486 Salmonella typhimurium A serotype of Salmonella enterica that is a frequent agent of Salmonella gastroenteritis in humans. It also causes PARATYPHOID FEVER. Salmonella typhimurium LT2

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