Biomaterial Database

[Origin of plague moderate phages of serotype 2]. 1977

N N Novosel'tsev, and I V Ryzhko, and V K Kidreev

Results of study of the negative colonies morphology, the structure of corpuscles, antigenic properties, specificity, and the action range permitted to refer the phages obtained from 18 E. coli strain, 1 plaque strain, and 1 pseudotoberculosis bacillus strain to the same group and to identify them with plague phages of serological type 2. Isolation of the same phage type from different bacterial species permits to regard them as "polyhostal" ones. E. coli should be considered as the main carrier of phages belonging to serological type 2. It is suggested that phages existing on microbes belonging to different species should be called "polyhostal".

UI	MeSH Term	Description	Entries
D008242	Lysogeny	The phenomenon by which a temperate phage incorporates itself into the DNA of a bacterial host, establishing a kind of symbiotic relation between PROPHAGE and bacterium which results in the perpetuation of the prophage in all the descendants of the bacterium. Upon induction (VIRUS ACTIVATION) by various agents, such as ultraviolet radiation, the phage is released, which then becomes virulent and lyses the bacterium.	Integration, Prophage,Prophage Integration,Integrations, Prophage,Prophage Integrations
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
D003090	Coliphages	Viruses whose host is Escherichia coli.	Escherichia coli Phages,Coliphage,Escherichia coli Phage,Phage, Escherichia coli,Phages, Escherichia coli
D001435	Bacteriophages	Viruses whose hosts are bacterial cells.	Phages,Bacteriophage,Phage
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
D015007	Yersinia	A genus of gram-negative, facultatively anaerobic rod- to coccobacillus-shaped bacteria that occurs in a broad spectrum of habitats.
D015010	Yersinia pestis	The etiologic agent of PLAGUE in man, rats, ground squirrels, and other rodents.	Bacillus pestis,Bacterium pestis,Pasteurella pestis,Pestisella pestis,Yersinia pseudotuberculosis subsp. pestis