Lung of a horse that died of African horse sickness.  Note the marked pulmonary oedema and scatterred pleural haemorrhages (wahs8).

African horse sickness.  Trachea containing blood-tinged foam caused by a marked pulmonary oedema (wahs7).

African horse sickness: marked intermuscular oedema (wahs5).

Horse that died of African horse sickness.  Note the marked peri-tracheal oedema, and the foam-filled trachea caused by the marked pulmonary oedema (wahs4)

African horse sickness. Note the pronounced supra-orbital swelling (wahs3.jpg)

Horse that died of African horse sickness.  Note the severe subcutaneous oedema (wahs2).

African horse sickness: Note the severe conjuctival oedema and multifocal haemorrages varying from petechieae to ecchymoses, and hyperaemia (wahs1)

Malignant catarrhal fever: Histopathology showing segmental, necrotic vasculitis in a case of MCF

Malignant catarrhal fever: Granulomatous hepatitis in a rabbit infected with OHv2  (H&E stain) (Book)

Malignant catarrhal fever: Histopatholigical features of a peri-portal inflammatory reaction (H&E stain) (Book)

Malignant catarrhal fever:  Histopathology of a rete showing fibrinoid medial necrosis and a mild lymphoid inflammatory reaction (Book)

Malignant catarrhal fever: Epithelial necrosis, apoptosis and inflammation (Book)

Malignant catarrhal fever: Histopathological features of necrotic arteritis seen in MCF (H&E stain) (Book)

Malignant catarrhal fever: Interstitial lymphoid hyperplasia in the kidney (H&E stain) (Book)

Malignant catarrhal fever: Acute cystitis and multifocal haemorrhage in a bison (Book)

Malignant catarrhal fever: Acute, multifocal, necrotic omasitis in a bison that died of MCF (Book)

Malignant catarrhal fever: Severe, acute, erosive to ulcerative stomatitis (Book)

Malignant catarrhal fever: Severe tracheobronchitis in a bovine that died of the disease (Book)

Malignant catarrhal fever: Bovine manifesting severe dysphoea and salivation (Book)

Malignant catarrhal fever: Acute arthritis in a bovine that died of MCF (Book)

Black wildebeest (Connochaetes gnu), one of the carriers of Alcelaphine herpersvirus 1 in Africa

Blue wildebeest (Connochaetes taurinus), the prime carrier of Alcelaphine herpesvirus 1 in Africa

Malignant catarrhal fever:  Marked blueish discolouration due to corneal oedema in a bovine suffering from MCF (wmcf6)

Malignant catarrhal fever:  Blueish discoloration caused by corneal oedema (wmcf7)

Malignant catarrhal fever: Opacity of the cornea due to severe corneal oedema (wmcf10)

Malignant catarrhal fever: Peripheral corneal oedema (wmcf11)

Malignant catarrhal fever: Blocked nostrils and necrotic skin of the muzzle (wmcf12)

Malignant catarrhal fever: Acute rhinitis and dermatitis accompanied by profuse salivation (wmcf13)

Malignant catarrhal fever:  Acute stomatitis and ulcerative dermatitis of the muzzle (wmcf15)

Malignant catarrhal fever: Acute stomatitis and mucosal haemorrhage (wmcf18)