DrVirgo
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6. A 30 year old woman develops serum sickness (immune complex formation) following parenteral administration of penicillin. A plasma sample from this patient is found to be strongly chemotactic for neutrophils, monocytes, eosinophils, and basophils. Which of the following mediators is most likely responsible for the chemotactic activity in this patient?
A. C3a
B. C3b
C. C5a
D. C5b
E. C5-C9
Its C, (C5a) right?
and C3b is an opsonin.
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| robin082006
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B
Chemotactic factor: IL1, IL8, C5a, Leucotriene B4
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| waqastariq
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exactly...C5a .... is the strongest chemotactic factor for granulocytes...
then comes IL-8 and LT B4
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| DrVirgo
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Ok, so its C. C5a
thanks. 
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| Cedrick
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| leen
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C..
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| nadiabarati
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C
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