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 BACTERIOLOGY Bacteriology is a branch of microbiology that is concerned with the study of bacteria (as well as Archaea) and related aspects. It's a field in which bacteriologists study and learn more about the various characteristics (structure, genetics, biochemistry and ecology etc.) of bacteria as well as the mechanism through which they cause diseases in humans and animals. Bacteriology played an important role in the development of the fields of molecular biology and genetics. This subdivision of microbiology involves the identification, classification, and characterization of bacterial species. A person who studies bacteriology is a bacteriologist. BACTERIA: Bacteria are small prokaryotic cells (a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle). Prokaryotes are divided into two domains, Bacteria and Archaea. Prokaryotes reproduce without fusion of gametes. Bacteria and Archaea reproduce through asexual reproduction...

 Decontamination is the removal or reduction of chemical, biologic, or radiologic agents from the patient's skin, mucosa, lungs, and gastrointestinal tract.Decontamination is an important step in decreasing the clinical effects of the agent on the patient, as well as protecting coworkers from exposure. For most agents and the vast majority of scenarios, the removal of clothing and a simple 5- to 6-minute shower with soap and water is sufficient to eliminate the risks to the patient and hospital staff. In rare circumstances, additional steps in decontamination including gastric lavage, broncho-alveolar lavage, surgical removal of wound foreign bodies, and administration of activated charcoal, polyethylene glycol electrolyte solution, and radioisotope binding agents, may be necessary.Decontamination is a series of processes that effectively remove or destroy infectious agents or other contaminants (e.g. organic matter) in order to prevent the spread of infection.      ...

  Plaque Control Research has indicated that dental caries does not develop in  experimental animals fed their entire diet by stomach tube. How￾ever, Bowen (1969a) has shown that plaque still forms on tooth  surfaces of monkeys in spite of receiving their diet in this manner.  Bowen (1969a) further showed that the capacity of plaque to  produce acid was influenced by the experimental regimen. When a  normal cariogenic diet was fed by stomach tube for two weeks,  almost no acid was formed in the plaque. Plaque formed in the  presence of glucose had a "much less acidogenic capacity than that  formed from sucrose. Plaque formed three months after the ani￾mals had been returned to their normal diet had approximately the  same acidogenic potential as that formed before the experiment.  Periodontal disease is the major cause oftooth loss after 35 years  of age. In common with dental caries, periodontal disease is wide￾spread. In one ...