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. 2023 Feb 26;15(3):771. doi: 10.3390/pharmaceutics15030771

Figure 2.

Figure 2

TEM images of sourced Fe3O4 (A); CaCO3 (B); Fe3O4@CaCO3 obtained using 4.5 mg/mL (C); 1.8 mg/mL (D); 0.9 mg/mL (E); 0.45 mg/mL of Fe3O4 (F). The bar indicates 100 nm.