Rickettsia typhi Ab.IgG^1st specimen:Titr:Pt:Ser:SemiQn
rickettsia typhi ab.igg^1st specimen:titr:pt:ser:semiqn
Rickettsia typhi Ab.IgG^1st specimen:Titr:Pt:Ser:SemiQn
rickettsia typhi ab.igg^1st specimen:titr:pt:ser:semiqn