Fig. 3

Cryopreservation of primary fibroblast cells using different cryoprotectants. Primary fibroblast cells were cryopreserved in different cryoprotective solutions. The total number of cryopreserved primary fibroblast cells in suspension a or in adherent monolayers b was counted 3 days after thawing. As a comparison, fresh primary fibroblast cells were counted. * indicates p < 0.05