Naoko Watanabe-Okochi et al.
Vox sanguinis, 115(8), 756-766 (2020-05-13)
The low-incidence antigen Sta of the MNS system is usually associated with the GP(B-A) hybrid molecule, which carries the 'N' antigen at the N terminus. The GP(A-A) molecule with trypsin-resistant M antigen has been found in a few St(a+) individuals.