At the time of the merger, Rhône-Poulenc's business included the pharmaceutical businesses Rorer, Centeon (blood products), and Pasteur Merieux (vaccines), the plant and animal health businesses Rhône-Poulenc Agro, Rhône-Poulenc Animal Nutrition, and Merial, and a 67 percent share in Rhodia, a speciality chemicals company. Hoechst, one of the companies resulting from the post-WWII split of IG Farben, had seven primary businesses: Hoechst Marion Roussel (pharmaceuticals), AgrEvo (a joint venture with Schering in crop protection agents and pest control products), HR Vet (veterinary products), Dade Behring (diagnostics), Centeon, Celanese (chemicals), and Messer (chemicals). Merieux has been in the business of selling blood products, and In the 1980s during the , Merieux and other companies were involved in scandals related to HIV-contaminated haemophilia blood products that were sold to developing nations.