Use the Following Information as Background for the Next Few

question 74

Multiple Choice

Use the following information as background for the next few questions.
Immunodeficiencies can be genetic in origin, and two examples are Bruton's agammaglobulinemia, an X-linked disorder, and DiGeorge syndrome, caused by a deletion from chromosome 22. Bruton's disorder results in underdeveloped B cells, whereas DiGeorge syndrome results in a missing or seriously underdeveloped thymus.
-Select the description that likely indicates 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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