Gomez-Miguel MJ, Moriyon I, Alonso-Urmeneta B, Riezu-Boj JI, Diaz R. Serological response to the outer membrane lipoprotein in animal brucellosis. Infect Immun 1988 Mar;56(3):716-718.
The presence of antibodies to Brucella outer membrane lipoprotein was investigated in cattle and rams. Low but significant amounts of antibody were detected in sera from B. abortus-infected cattle and from B. ovis-infected rams which had developed epididymitis. Strain-19-vaccinated cattle also showed a weak albeit transient antibody response.