# OnCo record paper-tempero-ca19-9-lewis-antigens-cancer-res-1987 (paper). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/key-papers/paper-tempero-ca19-9-lewis-antigens-cancer-res-1987/>
  a schema:ScholarlyArticle ;
  onco:kind "paper" ;
  schema:identifier "paper-tempero-ca19-9-lewis-antigens-cancer-res-1987" ;
  schema:name "Relationship of carbohydrate antigen 19-9 and Lewis antigens in pancreatic cancer"@en ;
  schema:description "The 1987 study showing that people who lack the Lewis blood group antigens cannot make the CA 19-9 tumour marker, so in about one patient in ten a normal blood test says nothing about the cancer."@en ;
  schema:url <https://onco.cc/key-papers/paper-tempero-ca19-9-lewis-antigens-cancer-res-1987/> ;
  schema:dateModified "2026-09-24"^^xsd:date ;
  schema:citation <https://pubmed.ncbi.nlm.nih.gov/3308077/>, <https://europepmc.org/article/MED/3308077> ;
  onco:tag "pancreatic-evidence" ;
  schema:datePublished "1987"^^xsd:gYear ;
  schema:author "Tempero MA, Uchida E, Takasaki H, et al." ;
  onco:related <https://onco.cc/key-papers/paper-fahrmann-ca19-9-lead-time-gastroenterology-2021/> ;
  onco:cancers <https://onco.cc/cancers/pancreatic/> ;
  onco:terms <https://onco.cc/terms/ca19-9/>, <https://onco.cc/terms/tumour-markers/>, <https://onco.cc/terms/lewis-negative/> ;
  onco:bottlenecks <https://onco.cc/bottlenecks/b-biomarker-validation/> ;
  onco:journals <https://onco.cc/journals/cancer-research/> .