_:vb50950776 . _:vb50950776 "A hematopoietic system disease that is characterized by a decrease in the normal number of red blood cells."^^ . _:vb50950776 "url:http://www.nhlbi.nih.gov/health/health-topics/topics/anemia/"^^ . _:vb50950776 . _:vb50950776 . _:vb50950776 . _:vb50950776 "url:http://en.wikipedia.org/wiki/Anemia"^^ . _:vb50950776 . _:vb50950776 .