PPT-Lecture 3 virology Carcinogenesis

Carcinogenesis Carcinogenesis or Oncogenesis creation of cancer normal cells are transformed into cancer cells characterized by a progression of changes on cellular and genetic level that ultimately reprogram a cell to undergo uncontrolled cell division thus forming a malignant mass. ProportionPercentageChemicals tested in both rats and mice 350/59059%Naturally occurring chemicals 79/13957%Synthetic chemicals 271/45160%Chem. in Carcinogen. Potency Database 702/134852%Natural pesti Activatedlymphocytesasametabolicmodelfor carcinogenesis AndrewNMacintyreandJeffreyCRathmell * Abstract Metabolicreprogrammingisakeyeventintumorigenesistosupportcellgrowth,andcancercellsfrequently beco Virology. Biology 516 Fall. Virology. Virology: is . the study of . viruses. . M. icroscopic. , parasitic particles of genetic material contained in a protein . coat.. Viruses . must. be within a host cell to reproduce.. Carcinogenesis. Are there differences in the mechanisms of carcinogenesis associated with chemical, radiation, or dietary carcinogens?. What is Carcinogenesis?. Carcinogenesis is the production of cancer cells or the process of normal cells transforming into cancerous cells. . part 3. ..\practical virology\virology\lab.10\cell culture video.mp4. Since the discovery by Enders (1949) that polioviruses could be cultured in tissue, cell culture has become a very useful and convenient method for isolating viruses in vitro. A. Abdel . Baky. Associate Professor. Pharmacology and Toxicology. Carcinogenesis. Carcinogenesis is a multistep process at both the phenotypic and the genetic levels . that . end with the disease . - Classification of viruses . - Replication of viruses . . Virology . Virology: is a branch of science . that deals with viruses and viral . diseases.. Viruses are the smallest infectious. LEC.5. Chemical carcinogenesis:. General principles of chemical carcinogens;. I. . Could be . natural or synthetic chemical. ..  . II. . Chemicals either . direct acting chemical. (. active without transformation in the body). Department of Microbiology and Immunology. Osaka University Graduate School of Medicine. Japan. Tel: 81-6-879-3780. Research Interest. Studies on viruses . enter into cells, express their genes, amplify the genomes, assemble virus particles and . and strains U l102 and Z29 Z29 Subsequent work has shown that isolates can be discriminated into into 11, 14], which extend across the the (iv) Nucleotide sequence analysis also supports the existence Methods used in virology are various, ranging from those of molecular biology to the cell biology techniques. Each technique has its own principles and aims for which it is carried out.. Many of these methods are used, not only in virus research, in the diagnosis of virus disease of humans, animals, and plants.. Dept. of Biology, 2. nd. stage, 2016-2017. 2. nd. semester. References. :. Virology: principles and applications, John Carter and Venetia Saunders, 2013.. Principles of Molecular Virology, Alan, J. . Topics. Week l:. -Introduction and General characters of viruses. . (History ,definition, and importance of study). . Viral . structure. Virus . structure and morphology. composition . General characters of viruses. :. Virus . particles are very small in size; they are between 20-500 nm (nanometer) in . diameter. For this Viruses . cannot be seen by ordinary microscope, but only by Electron microscope (EM)..