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. 2018 Jun 5;10(6):620. doi: 10.3390/polym10060620

Figure 1.

Figure 1

Preparation of PLGA-nHAP microspheres through emulsification using 0.5% PVA solution (Step 1) and further sorting and sintering of 250~500 μm PLGA-nHAP microspheres to obtain cavity-shaped microsphere scaffold with 2-mm inner diameter, 2-mm bottom thickness and 1-mm wall thickness (Step 2). Two gelatin-nHAP disk-shaped cryogel scaffolds (2 mm diameter × 1 mm thickness) were kept one over the other, and placed tightly inside the cavity of the microsphere scaffold to obtain a cryogel-embedded microsphere hybrid scaffold (Step 3).