Fig. 5. Examination of the BMAS degradation process. (A) Stent morphology by X-ray tomography in vitro. The continuity of the stent was gradually lost, and the contrast of the bracket has changed, which means the metal content had changed. (B) Hematoxylin and eosin staining showing a BMAS tissue section (×63). (C) Analysis of BMAS degradation products. The analysis showed that the Mg content decreased gradually, while the Ca and P contents increased. BMAS, biodegradable magnesium alloy stent.
