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Alkali production from urea by bacterial ureases in the oral cavity is thought to have a major impact on oral health and on the physiology and ecology of oral bacteria. Using continuous chemostat culture, urease activity in Streptococcus salivarius 57.I was examined as a function of growth pH, carbohydrate availability and growth rate. A portion of the S. salivarius ureC gene was amplified by polymerase...
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