Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Determination of Mn SOD activity after treatment with different concentrations of ZnO nanoparticles. Cells were treated with 0, 31.25, 62.5, 125.0 μmol/l of ZnO nanoparticles for 6 h, then every sample was collected with 0.25% trypsin, washed with PBS twice and sonicated on the ice for 15 min, centrifuged at 5000 g at 4 °C for 10 min, and then the supernatant was used to determine MnSOD activity. Data were presented as mean ± SD of n = 3, and *P < 0.05 versus control sample.
