Fig. 1From: Vitrification for cryopreservation of 2D and 3D stem cells culture using high concentration of cryoprotective agentsCellular characteristics after re-warming compared with vitrification and slow-freezing method. a Morphology and b viability of MSCs after warming either vitrified or non-vitrified groups using trypan blue staining (left and middle) and c population doubling time (right). d The DNA fragmentation of each cell line by TUNEL assay (blue: cell, red: DNA strand breaks) and e the measurement of intracellular reactive oxygen species levels (green: unfrozen control, red: vitrification, blue: slow freezing)Back to article page