The different antigens existing in different individuals of the same species are called
A. Idiotypic antigens
B. Autoantigens
C. Xenoantigens
D. Alloantigens
E. Heterophilic antigens
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Which of the followings is correct about hapten?
A. It has immunogenicity and immunoreactivity
B. It has immunogenicity and no immunoreactivity
C. It has immunoreactivity but no immunogenicity
D. Only after binding with the carrier can it bind to the corresponding antibody
E. It is a polyclonal activator
Which of the following is not the property of the antigen?
Antigens are macromolecular substances
B. All the antigens are foreign substances to the body
C. The antigen that has immunogenicity will certainly have immunoreactivity
D. The antigen that has immunoreactivity will certainly have immunogenicity
E. The epitopes specifically bind to TCR / BCR or antibody
Which of the following is NOT correct about the cytokines?
A. Small soluble proteins
B. They work only when they bind to cytokine receptors
C. They mainly play an endocrine role
D. They are the messengers of communication between cells
E. They have pleiotropic biological effects
IL-5 may enhance the effects of IL-4 in the class switch to IgE. This property is called
A. Pleiotropism
B. Redundancy
C. Synergism
D. Antagonism
E. Cascade fashion
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