indirect immunofluorescence studies of blood group a , h , i , and i antigens were performed on the gastric mucosae and tumor tissues of patients with gastric carcinoma , on the mucosae of patients with chronic benign gastric ulceration , and on the mucosae of infants who had died of causes other than gastrointestinal disease .
C0017136
gastric mucosae
C0699791
gastric