Immunology Home>Medicine>Education>Medical_Conferences>Immunology     Web Pages Immunological Days In Pleven, Bulgaria Immunological Days In Pleven, Bulgaria, 2004. Tradition in medicine. European Congress of Reproductive Immunology European Congress of Reproductive Immunology conference in June 30 – July 3, 2004. 12th International Congress of Immunology, Montreal Traditional Congress of Immunological science in Montreal, Canada. Here you will learn the latest news about Immunology in the practice.