Fig. 5From: The ceramide [NP]/[NS] ratio in the stratum corneum is a potential marker for skin properties and epidermal differentiationCer subclass composition and the Cer [NP]/[NS] ratio during the differentiation of KCs. The level of total Cer and the composition of Cer subclasses (a), and the Cer [NP]/[NS] ratio (b) in the epidermal keratinization culture model. Day 1 indicates the date of the submerged culture. Cultures were raised to the air after day 1 to make more differentiated growth conditions for KCs. All bars show means ± SD, N = 3. Statistical significance determined by Dunnett’s test (** p < 0.01 vs. Day 1)Back to article page