an antigen of the HLA group, designated by a letter (HLA-A, HLA-B, etc.) according to the chromosome locus on which the controlling HLA gene appears and additionally by a number (HLA-A1, HLA-A2, etc.) according to the order of discovery and identification.
a camera equipped with a lens mount and film holder that can be raised or set at an angle, a bellows that can be additionally extended, and a back that has a ground glass for focusing, used especially for portraits and landscapes.
