Which is one of the three types of bone marrow transplants?

a. Synologous
b. Allogeneic
c. Xenologous
d. Isogenic

ANS: B
The three types of bone marrow transplants are allogeneic, autologous, and T cell–depleted marrow. Allogeneic transplants occur when the donor is HLA compatible with the recipient. Autologous transplants occur when the donor is the recipient. A T cell–depleted transplant occurs when the mature T lymphocytes are removed from donor marrow before being infused into the recipient.