_:vb50948668 . _:vb50948668 . _:vb50948668 . _:vb50948668 "A congenital hemolytic anemia characterized by the production of red blood cells with a sphere shape, rather than the normal biconcave disk shape."^^ . _:vb50948668 . _:vb50948668 "url:http://en.wikipedia.org/wiki/Hereditary_spherocytosis"^^ . _:vb50948668 .