Use the Information Below as Background for the Following Questions

question 9

Multiple Choice

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

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