問題詳情
29. Researchers suspect that cytotoxic T cells are usually able to find and attack cancer cells because
(A) B cells help them.
(B) cancer is induced by bacteria.
(C) cancer is an autoimmune disease.
(D) cancer cells release antibodies into the blood.
(E) cancer changes the surfaces of cancerous cells.
(A) B cells help them.
(B) cancer is induced by bacteria.
(C) cancer is an autoimmune disease.
(D) cancer cells release antibodies into the blood.
(E) cancer changes the surfaces of cancerous cells.
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