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Text replace - 'Monocytes - WikiBlood' to 'Monocytes'
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*Some viruses are thought to induce modifications of the pulmonary defences by:
 
*Some viruses are thought to induce modifications of the pulmonary defences by:
 
**Damaging the upper respiratory tract, thereby facilitating bacterial attachment and colonisation, with reduced [[Respiratory System General Introduction - Pathology#Mucociliary escalator|mucociliary clearance]]
 
**Damaging the upper respiratory tract, thereby facilitating bacterial attachment and colonisation, with reduced [[Respiratory System General Introduction - Pathology#Mucociliary escalator|mucociliary clearance]]
**Decreasing surfactant levels by destroying Type 2 pneu[[Monocytes - WikiBlood]]
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**Decreasing surfactant levels by destroying Type 2 pneu[[Monocytes]]
 
**Impairing the phagocytic ability of alveolar macrophages
 
**Impairing the phagocytic ability of alveolar macrophages
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*The pulmonary lesions develop very slowly hence this disease is uncommon in sheep < 2 years old
 
*The pulmonary lesions develop very slowly hence this disease is uncommon in sheep < 2 years old
 
*Increased respiratory rate upon exertion, loss of weight
 
*Increased respiratory rate upon exertion, loss of weight
*Remains in [[Monocytes - WikiBlood]] and macrophages
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*Remains in [[Monocytes]] and macrophages
 
*Gross findings
 
*Gross findings
 
**Severe [[Lungs Inflammatory - Pathology#Interstitial pneumonia|interstitial pneumonia]]
 
**Severe [[Lungs Inflammatory - Pathology#Interstitial pneumonia|interstitial pneumonia]]