Hemagglutination inhibition titers of saliva and gastric mucosa samples against anti-ABH and Lewis antibodies and a lectin.

*Three samples were tested in each saliva from ABO(H), Lewis-positive individuals and a single sample was tested in each saliva from Lewis-negative individuals and in each gastric mucosa. sec., secretor; non-sec., non-secretor. n.t., not tested. HAI, hemagglutination inhibition.