The best Solution for Cryopreservation of Mammalian Stem Cells FILOCETHSTEM FILOCETHSTEM is a chemically fully defined freezing medium especially developed for the cryopreservation of Stem Cells. FILOCETHSTEM is manufactured with same proprietary procedure as the known and successful FILOCETHPLUS Stem Cells thawed after cryopreservation in FILOCETHSTEM  maintain their original differentiation potential. The stem cell markers also are recognised after thawing. FILOCETHSTEM contains Dimethylsulfoxide (DMSO) at a concentration of 5%. FILOCETHSTEM is endotoxinfree and animal component free (ACF) FILOCETHSTEM has a shelf lifetime of 24 months if stored at 4oC. FILOCETHSTEM must not be stored frozen!