| detection of geographic isolates of anaplasma marginale, using polyclonal bovine antisera and microfluorometry. | geographically separate united states isolates of anaplasma marginale were differentiated, using polyclonal bovine antiserum and microfluorometry. both isolate-common and restricted antigen-specific antibodies were apparent in sera of splenectomized calves after resolution of infection, as judged by the capability of the antisera to recognize heterologous isolate antigens to a lesser extent than homologous antigens. furthermore, absorption of the antisera with homologous antigens removed homolog ... | 1985 | 3907437 |