Human Leukocyte Antigens
Background
HLA is located on chromosome 6 in the Major Histocompatibility Complex (MHC).
HLA Class I
HLA class I molecules are expressed by healthy nucleated cells.
HLA Class II
HLA class II molecules are expressed by professional antigen-presenting cells (APC)–dendritic cells, macrophages, and B cells.
HLA Nomenclature
