The HLA complex is enlarged to depict the A, B, C, and D loci.
The numbers 17, 15, 20, 0.8-1.0, and 0.8 represent approximate distances in
PGM3 = phosphoglucomutase 3.
PG5 = urinary pepsinogen.
PGM3 and PG5 are shown to illustrate the position of the HLA complex relative
to other markers.
The numbers in parentheses (>11, 31, >6, >11) indicate the number of
recognized antigens for each locus.
Figure 4-1. Two representations of human chromosome number 6.