Table 1.

Particle Size and Encapsulation Efficiency of the Microspheres

Name of specimen		BB BSA (core)/BSA (shell)	SB simvastatin (core)/BSA (shell)	XP PDGF (shell)	PS PDGF (core)/simvastatin (shell)	SP simvastatin (core)/PDGF (shell)
Particle size (μm)		18.1±1.9	20.9±1.5	18.6±1.0	19.8±1.3	18.8±0.8
Encapsulation efficiency (%)	Core	60.0±2.2	96.2±3.5	NA	93.8±2.6	84.5±2.5
	Shell		63.5±0.2	53.9±1.1	83.2±2.7	60.3±2.2

PDGF, platelet-derived growth factor; BSA, bovine serum albumin; NA, not available.