Cancer cells have a series of features that allow the immune system to identify and attack them. However, these same cells create an environment that blocks immune cells and protects the tumor. This means that immune cells cannot reach the cancer cells to remove them. The scientific community has been working for years to increase the effectiveness of the immune system against cancer by using vaccines based on dead tumor cells.
from Latest Science News -- ScienceDaily https://ift.tt/4kfY7Zp
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