INDEX
1. INTRODUCTION
1.1 Postweaning Multisystemic Wasting Syndrome (PMWS)
1.1.1. History 2
1.1.2. Aetiology 3
1.1.2.1. Porcine Circoviruses 3
1.1.2.2. Taxonomy 4
1.1.2.3. Morphology and structure 5
1.1.2.4. Biological and physiochemical properties 6
1.1.3. Epidemiology 7
1.1.3.1. Geographic distribution 7
1.1.3.2. Transmission 7
1.1.3.3. Morbidity and mortality 9
1.1.3.4. Porcine circovirus serological prevalence 10
1.1.4. Pathogenesis 11
1.1.5. Clinical signs 12
1.1.6. Pathological findings 13
1.1.6.1. Macroscopic lesions 13
1.1.6.2. Microscopic lesions 14
1.1.7. Diagnosis 15
1.1.7.1.Histology 15
1.1.7.2. PCV2 detection in tissues 15
1.1.7.3. PCR 17
1.1.7.4. Serology 18
1.1.8. Immunology 19
1.2. Swine immune system cells 20
1.2.1. Characterisation of swine immune system cells 20
1.2.1.1 Lymphocytes 23
1.2.1.2. Macrophages and granulocytes 23
1.2.1.3. Antigen presenting cells 24
2. OBJECTIVES
3. STUDY I: Development of immunohistochemical techniques to
detect immune system cells in porcine paraffin-embedded tissues
3.1. Materials and methods 28
3.1.1. Tissues 28
3.1.2. Antibodies 28
3.1.3. Antigen retrieval 29
3.1.4. Immunohistochemistry 30
3.2. Results 31