Which statement correctly associates the P system with its corresponding antigen?

Which statement correctly associates the P system with its corresponding antigen?

• A. Tj^a is part of the P system
• B. Tj^a is part of the MNSs system
• C. Tj^a is part of the Lewis system
• D. Tj^a is not an antigen

Answer: (A)

Tj^a is an antigen in the P blood group system. The P system includes P-related antigens, such as P1 and rarer ones like Tj^a, which are used in serologic testing and antibody identification. It is not part of the MNSs system (which includes M, N, S, s, and U) nor the Lewis system (which involves Le(a) and Le(b)). So linking Tj^a to the P system is the correct association, and Tj^a is indeed an antigen.

Tj^a is an antigen in the P blood group system. The P system includes P-related antigens, such as P1 and rarer ones like Tj^a, which are used in serologic testing and antibody identification. It is not part of the MNSs system (which includes M, N, S, s, and U) nor the Lewis system (which involves Le(a) and Le(b)). So linking Tj^a to the P system is the correct association, and Tj^a is indeed an antigen.