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.
Box plot representing small EV concentration and size in regard to tumor differentiation at different timepoints: (a) before surgery; (b) one month after surgery expressed as relative change. Relative change in EV characteristics was defined as the difference of small plasma EV (sEV) concentration or size values one month after and before surgery, divided by its value before surgery.
