Biological Effect of Gas Plasma Treatment on CO₂ Gas Foaming/Salt Leaching Fabricated Porous Polycaprolactone Scaffolds in Bone Tissue Engineering

Figure 2

SEM cross-section images of (a) pristine, (b) O₂ plasma treated, and (c) N₂ plasma treated porous PCL scaffolds surface.

(a)

(b)

(c)