The regulation or modification of the immune system’s activity, either by enhancing or suppressing it.

Why this matters

Stem cells have immunomodulatory properties that can help treat autoimmune diseases and prevent transplant rejection.

LINK: https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/immunomodulation#:~:text=Immunomodulation%2C%20manipulation%20of%20the%20immune,and%20autoimmune%20diseases%2C%20among%20others.