Chondrocyte viability. The chondrocyte viability was investigated by the metabolic dye AlamarBlue and was by quantified by fluorescence. The bars represent the mean value from 6-replicates at the last day of culture and the indivdual values were adjusted for the amount of cultured cartilage. The errorbars are the standard error of mean, SEM, and the asteriks indicate ***, P < 0.001. Salmon calcitonin: sCT.