HLA

"Human Leukocyte Antigens" (HLA) - Proteins on white blood cells that make each person's tissue unique. The HLA A, B, C and DR proteins are important in matching patients and donors for a bone marrow or blood stem cell transplant. This matching process is known as HLA typing. The more closely matched the recipient and donor's HLAs are, the more likely the transplanted tissue will be compatible with and tolerated by the recipient.