Cancer immunology is a branch of immunology that focuses on studying how the immune system responds to cancer cells and how it can be harnessed to treat cancer. This field explores the interactions between the immune system and cancer cells, with a particular emphasis on understanding how cancer cells evade detection and destruction by the immune system. Researchers in this area are investigating ways to enhance the ability of the immune system to recognize and target cancer cells, through therapies such as immune checkpoint inhibitors, CAR-T cell therapy, and cancer vaccines. The goal of cancer immunology research is to develop more effective and targeted treatments for cancer that utilize the power of the immune system to fight the disease.