The phenomena of the specific interaction of serum antibodies with antigens are:
a) agglutination ;
b ) precipitation;
c ) lysis;
d ) cytotoxicity
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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