Ehrlichia chaffeensis Ab.IgM:Titr:Pt:Ser:SemiQn:IF
ehrlichia chaffeensis ab.igm:titr:pt:ser:semiqn:if
Ehrlichia chaffeensis IgM Ab [Titer] in Serum by Immunofluorescence
ehrlichia chaffeensis igm ab [titer] in serum by immunofluorescence