An antibody is:
a. A cell that engulfs and digests solid substances.
b. A material not normally present in the body that stimulates an immune response.
c. A protein that resides in the T cells.
d. A protein produced by the body in response to stimulation by an antigen.
Answer: d. A protein produced by the body in response to stimulation by an antigen.
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Indicate whether the statement is true or false.
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Fill in the blank(s) with correct word