Rickettsia typhi Ab.IgG^2nd specimen:Titr:Pt:Ser:SemiQn
rickettsia typhi ab.igg^2nd specimen:titr:pt:ser:semiqn
Rickettsia typhi IgG Ab [Titer] in Serum --2nd specimen
rickettsia typhi igg ab [titer] in serum --2nd specimen