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Uterine section’s hematoxylin-eosin staining from E6 to E8. No significant abnormal decidualization or embryonic development occurred in the folate-deficient group. N: normal group; FD: folate-deficient group; E: embryo; L: luminal epithelium; G: glandular epithelium; PDZ: primary decidual zone; SDZ: secondary decidual zone; M: mesometrial; AM: anti-mesometrial; VSF: vascular sinus folding; Scale bar: 500 μm; E6, Embryonic day 6; E7, Embryonic day 7; E8, Embryonic day 8.
