title: Natural history of early gastric cancer.
mesh_terms: D000599:Amino Acids, Diamino / Q000009:adverse effects*; D000087522:Cyanobacteria Toxins; D006801:Humans; D009361:Neoplasm Invasiveness; D013274:Stomach Neoplasms / Q000473:pathology*; D013997:Time Factors
chemical_list: D000599:Amino Acids, Diamino; D000087522:Cyanobacteria Toxins; C001824:beta-N-methylamino-L-alanine