What could result when grafted tissue such as bone marrow contains passenger lymphocytes?

Question

Quizplus · Accepted Answer

Passenger lymphocytes in grafted tissue can attack the host's tissues, resulting in graft versus host disease. This can occur when the graft is allogeneic (from a different individual), and the lymphocytes in the graft identify the host tissues as foreign and mount an immune response against them. This can result in a range of symptoms, including skin rashes, gastrointestinal problems, liver damage, and even death. Host rejection of graft is another possible outcome, but it is less likely to be caused by passenger lymphocytes specifically. The formation of autoantibodies and hypogammaglobulinemia are not typical consequences of grafting with passenger lymphocytes.

What Could Result When Grafted Tissue Such as Bone Marrow