Research Article

Controlled Release of Mesenchymal Stem Cell-Conditioned Media from a Microsphere/Gel-Based Drug Delivery System for Wound Healing of Tympanic Membrane Perforations

Figure 2

In vitro conditioned media release from CM-MS. (a) Cumulative total protein release from 10 mg CM-MS. Inset: scanning electron microscopy images of CM-MS (scale bar = 10 µm). (b) Cumulative FGF-2 release from 10 mg CM-MS.
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