A 5-Month-Old Boy with Chronic Diarrhea and Failure to Thrive

question 343

Multiple Choice

A 5-month-old boy with chronic diarrhea and failure to thrive is found to have a low blood T-lymphocyte count and severely decreased serum immunoglobulin.  After thorough evaluation, an experimental treatment is proposed to his parents.  The therapy consists of infecting the patient's cells with a retroviral vector containing the gene for a protein that is deficient in this patient.  Which of the following proteins is most likely coded by this gene?

• A)Adenosine deaminase
• B)Myeloperoxidase
• C)NADPH oxidase
• D)Reverse transcriptase
• E)Xanthine oxidase

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Definitions:

Neurogenesis

The formation of new neurons.

Monkey Brains

Informally refers to the study or examination of the brains of monkeys to understand more about neuroanatomy and cognitive functions.

Corpus Callosum

The broad strip of nerve fibers which serves as a bridge for communication between the two halves of the brain.

Split Brains

A condition resulting from surgery that severs the corpus callosum, leading to disconnection between the two hemispheres of the brain.