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Unformatted text preview: are referred to as "cocci" while elongated cylinders are called "bacilli" or "rods". Some bacteria are slightly elongated cocci and these are referred to as "coccobacilli". Even other bacteria have a corkscrew-like appearance; these spiral forms are often called "spirochetes". Individual cells may also be arranged in pairs or clusters or chains. Thus, may morphologies are possible and these can be useful for the identification of bacterial genera. ( Click here to see a bacterial classification flowchart ). The ability of a bacterium to cause disease is known as its virulence. Factors involved in determining virulence potential are discussed here . In terms of the medical aspects of bacterial structure , we are most interested in those features that interact with the host. These features are found predominantly on the outer surface of the bacterial cell. This page will describe some of these features....
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