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Human leukocyte antigens


  • HLA
  • HLA antigens
  • HLA factors
  • human lymphocyte antigen
  • leukocyte antigens


One of a group of proteins found on the surface of white blood cells and other cells that play an important part in the body's immune response to foreign substances. These antigens vary from person to person, and an HLA test is done before organ transplantation to find out if tissues match between a donor and a recipient.

Definition from:  National Cancer Institute dictionaryThis link leads to a site outside Genetics Home Reference.

See also Understanding Medical Terminology.

Published: October 5, 2015