Severe combined immunodeficiency (SCID) is most commonly caused by:

Severe combined immunodeficiency (SCID) is most commonly caused by:



a. chromosome 22 trisomy
b. Y-linked inherited hypermetabolism
c. X-linked inherited enzyme or receptor deficiency
d. chromosome 7 deletion
e. XXY inheritance


Answer: c. X-linked inherited enzyme or receptor deficiency


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