Viral diseases 12 viral diseases 9 Bacterial diseases 8 Viral Diseases 7 Bacterial Diseases 6 Fungal diseases 5 Nutrition- Plant Pathogens 5 Pathogenesis 5 Root Diseases 5 Plant Pathology 4 Wilts 4 Animal nutrition 2 Host Resistance and Immunity 2 Non-communicable Diseases and Injuries of Animals 2 Parasitoses 2 Prion, Viral, Bacterial and Fungal Pathogens of Animals, (New March 2000) 2 Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals, (New March 2000) 2 Aeromicrobiology 1 Aetiology 1 Agricultural Microbiology 1 Agrochemicals 1 Air Microbiology 1 Allergies 1 Anaesthesia 1 Anaesthetics 1 Animal Behaviour 1 Animal Genetics and Breeding, (New March 2000) 1 Animal Immunology, (New March 2000) 1 Animal Physiology and Biochemistry (Excluding Nutrition) 1 Animal Reproduction and Embryology, (New March 2000) 1