In embryos shifted from MPT to FPT, aromatase increased, whereas in untreated controls maintained at MPT, aromatase was barely detectable. Contrastingly, gonads from E2-treated embryos showed scarce aromatase expression similar, to controls at MPT (Fig. 10A). Interestingly, precocious expression of FoxL2 was in- duced by E2, in contrast to a delayed increase of aromatase (Fig. 10B). Mean of the densitometric values of beta actin are shown in Suppl. Table 1.