The number of lymph node metastases in gastric cancer correlates with the angiotensin I-converting enzyme gene insertion/deletion polymorphism .
O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O O O B-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct O O O O