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metal prints streptococcus mutans metal prints tooth decay metal prints bacteria metal prints type metal prints streptococcus metal prints infect metal prints caries metal prints xylitol metal prints tem metal prints transmission metal prints electron micrograph metal prints microbiology metal prints bacteriology metal prints micro-organisms metal prints bacterial metal prints

photographs streptococcus mutans photos tooth decay photos bacteria photos type photos streptococcus photos infect photos caries photos xylitol photos tem photos transmission photos electron micrograph photos microbiology photos bacteriology photos micro-organisms photos bacterial photos

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Streptococcus mutans. Transmission electron micro- graph of thin-sectioned Streptococcus mutans bacteria in xylitol sugar alcohol. S. mutans is a Gram-positive, non-motile, spherical bacteria which typically form chains of cells. S. mutans cannot ferment xylitol. In its presence its cytoplasmic membrane and cell wall break releasing the cell contents (upper frame). Streptococcus mutans is found in the mouth cavity. It is one of the principal bacteria causing plaque formation on teeth, and a major cause of tooth decay. Use of xylitol as a sweetener in foods prevents S. mutans from multiplying and causing dental caries. Magnification: x100,000 at 10x8 inch size.

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