Figure 4: Expression of p300 protein (a) and mRNA (b) in the amnion and chorion-decidua (Ch-d) from non-labor group (C/S) and labor group (L). Data were presented as the mean ± SEM. (a) ** between amnion and chorion-decidua. (b) ** between amnion and chorion-decidua. * between C/S group and labor group within the amnion. Ponceau S staining was used as the internal control for Westerns and GAPDH mRNA as the internal control for mRNA.