https://www.selleckchem.com/products/fen1-in-4.html To explore the effects of prenatal exposure to polybrominated diphenyl ethers (PBDEs) on placental size and birth outcomes. Based on the perspective Wenzhou Birth Cohort, this nested case-control study included 101 fetal growth restriction (FGR) and 101 healthy newborns. Maternal serum samples were collected during the third trimester and measured for PBDEs by gas chromatography tandem mass spectrometry. The basic information of mother-newborn pairs was collected from questionnaires, whereas the placental size and birth outcomes of newborns were obtained from hospital records. A total of 19 brominated diphenyle ether (BDE) congeners were detected in maternal serum samples. Higher concentrations of BDE-207, -208, -209, and ∑ PBDEs were detected in FGR cases than in controls. Increased BDE-207, -208, -209, and ∑ PBDEs levels in maternal serum were related to decreased placental length, breadth, surface area, birth weight, birth length, gestational age, and Quetelet index of newborns. After adjusting for confounders, BDE-207 and ∑ PBDE concentrations in maternal serum were significantly associated with an increased risk of FGR. A negative association was found between PBDE levels in maternal serum and placental size and birth outcomes. Prenatal PBDE exposure may be associated with elevated risk of the incidence of FGR birth. A negative association was found between PBDE levels in maternal serum and placental size and birth outcomes. Prenatal PBDE exposure may be associated with elevated risk of the incidence of FGR birth. The prevalence of human brucellosis in Qinghai Province of China has been increasing rapidly, with confirmed cases distributed across 31 counties. However, the epidemiology of brucellosis transmission has not been fully elucidated. To characterize the infecting strains isolated from humans, multiple-locus variable-number tandem repeats analysis (MLVA) and whole-genome single-nucleotide polymorphism (