Secondary immunodeficiency involves the loss of a previously functional immune defense system,which can be caused by
A) a single gene defect.
B) AIDS.
C) aging.
D) nutritional deficiencies.
E) immunosuppressive therapies.

Question

Quizplus · Accepted Answer

In primary immunodeficiency,the dysfunction exists in the immune system.Most primary immunodeficiencies are congenital disorders related to a single gene defect.Secondary or acquired immunodeficiency is the result of factors outside the immune system,is not related to a genetic defect,and involves the loss of a previously functional immune defense system.AIDS is the most notable secondary immunodeficiency disorder caused by an infection.Aging,dietary insufficiencies,malignancies,stressors (emotional,physical),immunosuppressive therapies,and certain diseases such as diabetes or sickle cell disease are additional examples of conditions that may be associated with acquired immunodeficiencies.

Secondary Immunodeficiency Involves the Loss of a Previously Functional Immune