Fig. 1
From: The role of DNA hydroxymethylation and TET enzymes in placental development and pregnancy outcome
A Structure of human placenta (note: drawings are not up to scale). The different types of cells are shown in detail. B Comparison of 5hmC and TETs levels between the three trimesters of gestation. C Comparison of 5hmC levels between cytotrophoblast and syncytiotrophoblast cells. Green check mark: presence of 5hmC or epigenetic regulator expressed; Red X mark: 5hmC or expression of epigenetic regulator not present; Green arrow: 5hmC or epigenetic regulator levels increased; Red arrow: 5hmC or epigenetic regulator levels decrease; Grey square: not studied