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The expression of 5-HT receptors is upregulated in the chorionic villi of patients with EA. (A–B) The expression level of HTR1B was investigated in the chorion villi of patients with EA and control individuals by WB. GAPDH served as a loading control. (C–D) IHC staining of HTR1B in human chorionic villi. Scale bar: 50 μm. Data are shown as the mean ± SEM. **p < 0.01, ****p < 0.0001.
