Immunotherapy or biological therapy is the treatment of disease by activating or suppressing the immune system. Immunotherapies designed to increase the immune response to certain diseases. This can be an alternate treatment for cancer because chemotherapy can have negative effects on the body.[1][2]
↑Syn NL, Teng MW, Mok TS, Soo RA (December 2017). "De-novo and acquired resistance to immune checkpoint targeting". The Lancet. Oncology. 18 (12): e731–e741. doi:10.1016/s1470-2045(17)30607-1. PMID29208439.