Amniotic fluid l-ergothioneine concentrations in pregnant sheep after natural mating and transfer of vitrified/thawed in-vitro produced embryos

L-ergothioneine levels were measured in amniotic fluid of pregnant sheep after natural mating and transfer of vitrified/thawed in-vitro produced embryos. Amniotic fluids were collected between 60 and 65 and 80-85 days of gestation and analysed by an ultra-performance liquid chromatographic (UPLC)method with fluorescence detection. L-Ergothioneine concentrations ranged between 0.23 and 9.36 μmol/L and were significantly higher in pregnancy...