title: [CA 19.9 as tumor marker: preliminary results].
mesh_terms: D000951:Antigens, Neoplasm / Q000032:analysis*; D006801:Humans; D009369:Neoplasms / Q000276:immunology*
chemical_list: D000951:Antigens, Neoplasm
vernacular_title: El CA 19.9 como marcador tumoral: resultados preliminares.