Chronological Appearance of Skin Lesions Quiz

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What is the appearance of colonies of Erysipelothrix rhusiopathiae on serum or blood agar?

Small, clear, and glistening

Which animal is commonly affected by Erysipelothrix rhusiopathiae?

Turkeys

What is the unique characteristic of the cell wall of Erysipelothrix rhusiopathiae?

Does not contain DL-diaminopimelic acid

What disease form is Erysipelothrix rhusiopathiae known for causing?

<p>Polyarthritis</p> Signup and view all the answers

What is the total number of serotypes identified for Erysipelothrix rhusiopathiae?

<p>22</p> Signup and view all the answers

What is the appearance of Erysipelothrix rhusiopathiae colonies on gelatin medium?

<p>Bottle brush-like</p> Signup and view all the answers

What is the appearance of Listeria monocytogenes under the microscope?

<p>Coccoid forms</p> Signup and view all the answers

Why is acid-fast staining technique not applicable for Listeria monocytogenes?

<p>It does not retain the stain applied</p> Signup and view all the answers

What is the movement of Listeria monocytogenes under the microscope primarily due to?

<p>Flagella</p> Signup and view all the answers

Why is the surface colonies of Listeria monocytogenes described as small, flat, round, transparent, and glistening?

<p>Specific colony characteristics</p> Signup and view all the answers

Which feature of Listeria monocytogenes colonies indicates the presence of individual bacterial colonies or clusters that are too small to be easily discerned?

<p>Minute points</p> Signup and view all the answers

What does a narrow zone of beta-hemolysis around Listeria monocytogenes colonies indicate?

<p>Limited red blood cell lysis</p> Signup and view all the answers

What is the route of entry for polyarthritis in sheep?

<p>Docking and castration</p> Signup and view all the answers

Which factor contributes to the development of vegetation on the heart valves in vegetative endocarditis?

<p>High fibrin content in the blood</p> Signup and view all the answers

Which symptom indicates the presence of arthritis in cattle?

<p>Reluctance to move</p> Signup and view all the answers

What is the effect of synovial lining hypertrophy in arthritic form of the disease?

<p>Erosion of cartilage</p> Signup and view all the answers

When does cyanotic skin appear as a sign in birds?

<p>At initial stages of illness</p> Signup and view all the answers

What characteristic feature is observed in joints affected by chronic forms of the disease?

<p>Enlarged and painful joints</p> Signup and view all the answers

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