Use the Information Below as Background for the Following Questions

Use the information below as background for the following questions.
Immunodeficiencies may be genetic in origin. Two examples of these are Bruton's agammaglobulinemia, an X-linked disorder, and DiGeorge syndrome, caused by a deletion from chromosome 22. Bruton's results in underdeveloped B cells, while DiGeorge syndrome results in a missing or seriously underdeveloped thymus.
-Which of the following might be a child with Bruton's disease?

A) baby girl Denise, with low level of antibody response to streptococcal infection
B) baby boy John, with immature T cells, missing CD4 receptors
C) baby boy Jeff, with no plasma cells following infection by bacterial pneumonia
D) baby girl Susan, with no evidence of a thymus gland
E) baby boy Matt, with very low circulating antigens

Correct Answer:

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