Western blotting was performed according to a previously described procedure [26 (link)]. The following antibodies were used to test the expression of protein: anti-BMP4 (EPR6211) (ab124714, Abcam), anti-BMP4 (ab39973, Abcam), and anti-glutathione peroxidase 4 (anti-GPX4) (ab125066, Abcam). Anti-GAPDH (#5174, Cell Signaling Technology) was used as an internal loading control. Experiments were repeated more than three times, and representative images are presented in the article at the end.
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