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In Vitro Evaluation of the Feasibility of Commercial Zn Alloys as Biodegradable Metals |
| Fig. 2. SEM images of the microstructure of pure Zn and Zn alloys: (a) pure Zn, (b) ZA4-1 alloy, (c) ZA4-3 alloy, (d) ZA6-1 alloy. Matrix and second phases in images are indicated by *. |
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