[Retracted] Strontium/Chitosan/Hydroxyapatite/Norcantharidin Composite That Inhibits Osteosarcoma and Promotes Osteogenesis In Vitro

Figure 1

(a)−(d) SEM images of the materials of the Q0, Q1, Q2, and Q3 composite materials, respectively. (e) EDX spectra of the nanoparticles.

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