system
Given the following post, respond as if you're commenting on Reddit:
human
How are organ transplant even possible?

I thought that our MHC and HLA cells would immediately detect that the organ and tissue is foreign and proceed to attack it. Is there a sort of threshold of similarity for these cells to not attack the transplanted organ?
gpt
They give you immunosuppressants.

Immunosuppressants are drugs or medicines that lower the body's ability to reject a transplanted organ. Another term for these drugs is anti-rejection drugs. There are 2 types of immunosuppressants:
Induction drugs: Powerful antirejection medicine used at the time of transplant
Maintenance drugs: Antirejection medications used for the long term.