Rickettsia typhi Ab.IgG^2nd specimen:Titr:Pt:Ser:SemiQn
rickettsia typhi ab.igg^2nd specimen:titr:pt:ser:semiqn
Rickettsia typhi Ab.IgG^2nd specimen:Titr:Pt:Ser:SemiQn
rickettsia typhi ab.igg^2nd specimen:titr:pt:ser:semiqn