Which statement is incorrect?
A) Cytotoxic T cells release chemicals that destroy targeted cells.
B) Helper T cells enhance the activity of other T cells and B cells.
C) Suppressor T cells are believed to play an important role in tolerance to self-antigens.
D) Helper T cells can combine only with host cells bearing both foreign antigen and class I MHC-encoded self-antigens on their surface.
E) The majority of T cells are helper T cells.
Correct Answer:
Verified
Q41: IgM immunoglobulin
A)serves as the B-cell surface receptor
Q46: The antigen-binding fragments (Fab) of antibodies are
A)
Q46: _ T cells release perforin.
A)Cytotoxic
B)Helper
C)Suppressor
D)Regulatory
E)Inhibitory
Q47: A secondary response to an invading microorganism
Q48: Dendritic cells
A) are neurons
B) participate in the
Q49: Chemicals other than antibodies secreted by lymphocytes
Q53: Which one of the ABO blood groups
Q54: Active immunity
A)is self-generated upon exposure to antigen
B)can
Q54: Plasma cells
A) are not derived from B
Q60: A large, complex molecule that triggers a
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