is_manufactured_by has function has role has component immunizes recipient Sus scrofa licensed pig vaccine preventive vaccine function prophylactic vaccine licensed vaccine role contraceptive vaccine Improvac vaccine Improvac Oliver He A vaccine that stimulates the pig's own immune system to produce specific antibodies against GnRF. This temporarily inhibits testes function and thus stops the production and accumulation of boar taint-causing compounds. vaccine Peptide-protein conjugate and water-miscible adjuvant; control of boar taint WEB: http://www.improvac.co.nz/sites/improvac/en-nz/Pages/productoverview.aspx LHRH Pfizer Animal Health