Immunotherapy tries to help the immune system recognise cancer as a threat, and attack it
Rather than attacking the cancer directly, as chemo does, immunotherapy tries to rally the patient’s own immune system to fight the disease
Immune system is a network of cells, tissues and bio chemicals they secrete. It defends the body against the viruses, bacteria and other invaders.
Immune system does not stop cancer as cancer often finds ways to hide from the immune system or block its ability to fight
Immunotherapy involves drugs that free immune cells to fight cancer. These drugs blocks a mechanism called checkpoint. Checkpoint is used by cancer to shut down the immune system
