In recent years, scientists have discovered that some chemotherapy drugs not only kill cancer cells directly, but at least in some patients, mysteriously also trigger their immune system to attack the cancer. That would seem all but impossible, given that the immune system has a built-in safety mechanism called “self-tolerance” that blocks it from attacking a person’s own cells, even abnormal cells (ones that have become cancerous).
This article was originally published on MedicalXpress.com

