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Kaplan Qbank USMLE



Author4 Posts
  #1

1- A 10 years old boy is seen for recurrent bacterail infections. It is shown a deficiency on all classes of the immunoglobulin. Which of the following will be the most affected?

A- NEUTRALIZATION OF BACTERIA
B- OPSONISATION OF BACTERIA
C- ATTACHEMENT OF BACTERIA
D- COMPLEMENT FIXATION

2-Which one of the following immunoglogulin is a pentamer impossible to find in a baby and most efficient in complement fixation and agglutination
A- IG G1
B- IG G2
C- IG M
D- IG A
E- IG D


PLEASE EXPLAIN YOUR ANSWERS

  #2

1. B, I think this is X-linked Bruton's immunodeficiency, patient does not have IgG

2. C


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  #3

nod100/100

  #4

b and c

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