Figure 4.
FESEM images of powders after soaking in SBF: (a) MBG_Sr2%_SG after 3 days; (b) MBG_Sr2%_SG after 7 days; (c) MBG_Sr4%_SG after 3 days; (d) MBG_Sr4%_SG after 7 days.
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