Bone marrow harvested from a close relative is referred to as what kind of transplant?

The correct term for bone marrow harvested from a close relative is allogenic transplant. This type of transplant involves using stem cells or bone marrow from a donor who is genetically different from the recipient, but who is still a close match, such as a relative. The close genetic relationship enhances the likelihood of a successful transplant because the donor's cells are more likely to be compatible with the recipient's immune system.

In contrast, an autologous transplant is when a patient receives their own stem cells or bone marrow, often after it has been harvested and stored. Syngeneic refers to a transplant between identical twins, where the genetically identical nature of the twins means a high compatibility. Heterologous is a less common term that doesn't specifically apply to bone marrow transplants in this context and typically refers to tissues or organs taken from a different species or donor that is not genetically identical.

Understanding these definitions is crucial for recognizing the different types of transplants and their implications for patient care and treatment options.