When a person receives an organ transplant from another person how does the immune system respond?

When a person receives an organ transplant, their immune system recognizes the new organ as foreign due to differing antigens. This triggers an immune response, leading to the activation of T cells and the production of antibodies that can attack the transplanted organ. To prevent rejection, transplant recipients are typically prescribed immunosuppressive medications to dampen this immune response, allowing the body to accept the new organ. However, this makes them more susceptible to infections and other complications.