“…At first sight, these findings are in contrast with the original publication, which suggested that SARA was not an MNS blood group antigen as the SARA antigen is resistant to ficin and papain treatment while many MNS antigens, including M, N, Vw, Hut, Mur, M g , Vr, Hop, Bun, Mut, and Os a , are sensitive to treatment by these enzymes . However, this can be explained as on the glycophorin A molecule, Gly78 is a ficin proteolytic site and Arg80 is a papain proteolytic site.…”