The influence of bovine seminal plasma (SP) on the antigen-antibody pr
ecipitating complexes was investigated using kinetic nephelometric pro
cedure. Formation of OVA/anti-OVA (ovalbumin) immune complexes was inh
bited by bovine seminal plasma in a dose dependent manner. Partial cha
racterization of the active substance(s) was performed after chromatol
ography and gel- filtration separation procedures.