Biomaterial Database

Purification of avian encephalomyelitis virus by ultracentrifugation in a nonlinear cesium chloride gradient. 1978

M Matsumoto, and J R Wangelin, and M L Murphy

A rapid and convenient method is described for purifying avian encephalomyelitis virus. Infected embryo homogenate was treated with polyethylene glycol followed by extraction with fluorocarbon. Extracted sample was pelleted at 73,400 x g, resuspended, and subjected to isodensity centrifugation in preformed nonlinear gradient. A distinctive virus band was observed after centrifugation for 120 min at 192,000 x g. The fraction containing the virus band demonstrated the major portion of infectivity and the presence of the virus particles by electron microscopy. The method was reproducible within a limited number of trials.

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
D002586	Cesium	A member of the alkali metals. It has an atomic symbol Cs, atomic number 55, and atomic weight 132.91. Cesium has many industrial applications, including the construction of atomic clocks based on its atomic vibrational frequency.	Caesium,Caesium-133,Cesium-133,Caesium 133,Cesium 133
D002642	Chick Embryo	The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching.	Embryo, Chick,Chick Embryos,Embryos, Chick
D002712	Chlorides	Inorganic compounds derived from hydrochloric acid that contain the Cl- ion.	Chloride,Chloride Ion Level,Ion Level, Chloride,Level, Chloride Ion
D004770	Enterovirus	A genus of the family PICORNAVIRIDAE whose members preferentially inhabit the intestinal tract of a variety of hosts. The genus contains many species. Newly described members of human enteroviruses are assigned continuous numbers with the species designated "human enterovirus".	Coxsackie Viruses,Coxsackieviruses
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001350	Encephalomyelitis Virus, Avian	A tentative species in the genus HEPATOVIRUS infecting primarily young chicks, but also found in turkeys, pheasants, and guinea fowl. It causes a fatal neuronal degeneration and is transmitted by mechanical contact.	Avian Encephalomyelitis Virus,Epidemic Tremor Virus,Avian Encephalomyelitis Viruses,Avian encephalomyelitis virus 1,Encephalomyelitis-like Virus, Avian,Tremovirus A,Avian Encephalomyelitis-like Virus
D014461	Ultracentrifugation	Centrifugation with a centrifuge that develops centrifugal fields of more than 100,000 times gravity. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)