Table 2. Cumulative release amount of BSA calculated by the equation (2).

Time (h)	Cumulative release amount (μg)
0.25	0±0
2	22.5±5.6
4	62.8±11.9
6	90.3±11.5
12	103.3±5.7
24	108.1±12.3
48	111.9±14.4
72	117.3±11.3