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.
Cell viability of HaCaT cells upon exposure to different concentrations of EVs (1.25; 2.5; 3.75; 6.25 µg mL−1). The percentages of cell viability for each of the treatments were calculated in comparison to the control. Each experiment was replicated three times and error bar represent SD.
