What are Human Lymphocyte Antigens?

Human Lymphocyte Antigens:

1. A sort of molecule located on the surface of the majority of the body's cells.
2. Human lymphocyte antigens are critical components of the body's immunological response to foreign substances.
3. They are the components of a person's tissue type, which differs from person to person.
4. Human lymphocyte antigen tests are performed before a donor stem cell or organ donation to see if tissues match between the donor and the recipient.