Severe combined immune deficiencies (SCID) affect both
A) humoral and cellular immunity.
B) white blood cells and red blood cells.
C) mast cells and macrophages.
D) helper B cells and cytotoxic B cells.
Correct Answer:
Verified
Q18: Inflammation helps to fight infection by
A)creating an
Q19: The simplest type of antibody consists of
A)a
Q20: The constant region of an antibody molecule
Q21: Helper T cells secrete
A)cytokines.
B)antibodies.
C)antigens.
D)immunoglobulins.
Q22: In a less severe form of combined
Q24: Experimental gene therapy can be used to
Q25: The functions of antibodies include
A)activating complement,inactivating pathogens,and
Q26: Cluster-of-differentiation antigens are found on
A)B cells,where they
Q27: People who cannot become infected with HIV
Q28: People homozygous recessive for a 32-base deletion
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