. 2015 Sep 8;5:13876. doi: 10.1038/srep13876

Table 2. The extent of Zn²⁺ released in cell culture medium from pure and Al-doped ZnO nanoparticles.

Sample	Amount of Zn²⁺ ions released, mean ± SD (%)
Sample	25 μg/ml	50 μg/ml	100 μg/ml
Pure ZnO nanoparticles	2.16 ± 0.17 (8.7%)	4.22 ± 0.21 (8.4%)	8.84 ± 0.19 (8.8%)
Al-doped ZnO nanoparticles	1.11 ± 0.23 (4.4%)	2.12 ± 0.12 (4.2%)	4.34 ± 0.20 (4.3%)

Table 2. The extent of Zn2+ released in cell culture medium from pure and Al-doped ZnO nanoparticles.