Table 2. The BMP loading efficiencies (%) of Dex-GMA/gelatin nanoparticles (DG-NPs) achieved by different entrapment methods.

Initial BMP concentration (mg/mL)	0.1	0.5	1.0	1.5	2.0
Immobilization efficiency (IE)	99.31	96.42	50.84	35.67	25.95
Encapsulation efficiency (EE)	99.85	99.38	98.72b	82.44c	60.17c

Significant differences of BMP loading efficiencies between different protein entrapment methods: ^bP<0.05, ^cP<0.01.