4Shi C,Tian R,Wang M. CD44^+ CD133^+ population ex- hibits cancer stem cell-like characteristics in human gall- bladder carcinoma[J]. Cancer Biol Ther, 2010, 27 ( 11 ) : 1182-1190.
5Suetsugn A, Nagaki M, Aoki H. Characterization of CD133 + hepatocellular carcinoma cells as cancer stem/progenitor ceils [J]. Biochem Biophys Res Commu,2012,7(4) :820-824.