A patient with melanoma receives three types of therapy: surgery, radiation, and interferon. Which of these represents something the immune system uses against cancer as well?
A. Interferon-TH cells and NK cells secrete interferon in response to tumor cells.
B. Interferon-In complexes bound with MHC proteins, the interferons indicate the presence of altered tissue to B cells.
C. Radiation-a class of lymphocytes uses powerful electromagnetic radiation to attack "altered self" cells.
D. Interferon-NK cells insert interferon into the membranes of tumor cells, creating large pores that burst the cells.
Answer: A
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