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University of Texas, Rio Grande Valley - CLSC 2429 Exercise 19 1)Differentiate the microscopic morphology of streptococci and pneumococci as seen by Gram stain
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University of Texas, Rio Grande Valley - CLSC 2429 Exercise 19 |
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1)Differentiate the microscopic morphology of streptococci and pneumococci as seen by Gram |
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stain. |
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2. |
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What type of hemolysis is produced by |
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S. pneumoniae |
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3. |
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What is the quellung reaction? |
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4. |
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What role does a bacterial capsule play in infection? |
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Why is blood agar considered a differential medium? |
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What is the function of a candle jar? |
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7. |
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Describe the principle of the latex agglutination test. |
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8. |
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Is the normal flora of the upper respiratory tract harmful to the human host? Explain. |
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9. Is the normal flora beneficial to the host? Explain.
10. In collecting a throat culture, why is it important not to touch the swab to other surfaces in the mouth?
- 11. What specimens are of value in making a laboratory diagnosis of bacterial pneumonia? Why? Explain the difference between saliva and sputum.
- 12. Would a direct Gram stain of a sputum specimen be of any immediate value to the physician in choosing treatment for a patient with pneumonia? Explain.
- 13. What is the significance of VRE?
Exercise 20
- What is the satellite phenomenon?
- What is the incidence of Haemophilus influenzae as an agent of meningitis in infants and children under 3 years of age? In adults?
- 3. Why is a direct smear of spinal fluid essential when bacterial meningitis is suspected?
- 4. How can a diphtheroid be distinguished from the agent of diphtheria?
- 3. Why is a direct smear of spinal fluid essential when bacterial meningitis is suspected?
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