_:vb50955139 . _:vb50955139 . _:vb50955139 "url:http://www.medterms.com/script/main/art.asp?articlekey=5274"^^ . _:vb50955139 . _:vb50955139 . _:vb50955139 "A refractory hematologic cancer that is a mature B cell cancer that does not yield readily to treatment."^^ . _:vb50955139 "url:http://en.wikipedia.org/wiki/Hairy_cell_leukemia"^^ . _:vb50955139 .