title: [Gastroesophageal reflux disease: defense mechanisms].
authors.affiliation: Centro Médico del Potosí San Luis Potosí, México.
authors.forename: Ramón
authors.initials: R
authors.lastname: Carmona-Sánchez
mesh_terms: D004848:Epithelium / Q000502:physiology; D004943:Esophagogastric Junction / Q000033:anatomy & histology; D005744:Gastric Acid / Q000378:metabolism; D005764:Gastroesophageal Reflux / Q000378:metabolism / Q000382:microbiology / Q000503:physiopathology*; D016480:Helicobacter pylori; D006801:Humans