1.

Select the correct statement about immune system?

A. The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins
B. The most common form of immunodeficiency is graft­versus­host (GVH) disease
C. Severe combined immunodeficiency (SCID) disease is an acquired condition
D. Hodgkin's disease is a hereditary immunodeficiency found in children
Answer» B. The most common form of immunodeficiency is graft­versus­host (GVH) disease


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