Figure 4

Ontogenetic gene expression patterns of RARA (a), RARG (b) and RXRB (c). Gene expression measured as the mean expression ratio of the target gene with respect to the house-keeping gene (EF1α) at each sample time compared with initial sample time (2 dph). Different letters denote significant differences of the global gene expression (ANOVA, P < 0.05; n = 3).