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lubadub lubadub
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8 years ago
A 17-year-old male presents to the emergency room lethargic with a fever and rash. Blood cultures and cerebrospinal fluid samples are taken. The direct Gram stain of the CSF is provided.

Source: CDC and Susan Lindsley
At 24 hours, the blood cultures and CSF culture grow the same organism. Testing results include:
                    Gram stain: same as the direct smear    
                    Oxidase: purple
                    Glucose and maltose fermentation tubes: yellow
                    Lactose and sucrose fermentation tubes: red
                         Butyrate esterase: no color change
After a thorough history was taken with the assistance of the parents, it was discovered the patient has had two similar disease episodes in the past two years with the same organism. The physician should test the patient for
a.   a deficiency of the classical pathway of the complement system.
b.   a deficiency of the common terminal pathway of the complement system.
c.   common variable immune deficiency.
d.   severe combined immunodeficiency.
Textbook 
Clinical Laboratory Microbiology: A Practical Approach

Clinical Laboratory Microbiology: A Practical Approach


Edition: 1st
Authors:
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rawemotionsrawemotions
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8 years ago
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Second year nursing student at Ryerson University

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lubadub Author
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8 years ago
People, vote with confidence, this answered my question Smiling Face with Open Mouth
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8 years ago
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Second year nursing student at Ryerson University
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