Hello Dear Histonetters, I need a positive block of BVD (Bovine Virus Diarrhea) disease virus need. I would be very grateful if anyone help me. Thank you very much. -- Dr. M. Fatih Bozkurt AKÜ Veteriner Fakültesi Analiz ve Teşhis Laboratuvarı Patoloji Birimi - Afyonkarahisar