AP BIOLOGY

Detailed explanation-1: -Some cells of the immune system can recognise cancer cells as abnormal and kill them.

Detailed explanation-2: -Different cells fight different types of cancer. For example, one way the immune system fights cancer is by sending out a special form of white blood cells called T cells: The T cells see cancer as “foreign” cells that don’t belong in the body. The T cells attack and try to destroy the cancerous cells.

Detailed explanation-3: -A type of immune cell that can kill certain cells, including foreign cells, cancer cells, and cells infected with a virus. Killer T cells can be separated from other blood cells, grown in the laboratory, and then given to a patient to kill cancer cells.

Detailed explanation-4: -Cancer cells can even turn off the immune response so that the immune cells don’t attack them. Also, people with cancer often have a weakened immune system. The immune system gets weakened when the cancer itself or cancer treatment, like chemotherapy or radiation therapy, affects the bone marrow.

Detailed explanation-5: -Oncolytic viruses kill individual cancer cells, but studies also suggest that they can boost the immune system’s ability to recognize and kill a tumor. The viruses enter tumor cells specifically and replicate, eventually breaking the cells apart.