Streptococci are common opportunistic pathogens. Which one of the statements about the classification of streptococci is NOT correct?
Viridans
streptococci are identified by Lancefield grouping, which is based on the С
carbohydrate in the cell wall
Vibrio genus involves many species, only some serotypes of V.cholerae are pathogens of cholera. Which of the following causative agents of cholera?
V.cholerae serogroups non O1 and non O139
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