Tumorigenic, The stemline chromosome number is hypertriploid. Medium: McCoy’s 5a (Gibco 16600082) + 10% FBS, Subculture: 1:3 to 1:8, (80-90%), 0.25% trypsin or trypsin/EDTA; 5% CO2; 37°C, Freezing Medium: Complete culture medium supplemented with 5% (v/v) DMSO