Final answer:
Proteolytic enzyme techniques can be useful in identifying the HLA (human leukocyte antigen) group.
Step-by-step explanation:
Proteolytic enzyme techniques can be useful in identifying the HLA (human leukocyte antigen) group. The HLA antigens are proteins on the surface of white blood cells and are involved in immune responses. By using proteolytic enzymes, these antigens can be isolated and identified.