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.
Schematic diagram for cell velocity components: i) average total instantaneous velocity of the cells vtot, ii) average instantaneous velocity component along the EGF gradient direction vd, and iii) average instantaneous velocity along the normal to gradient direction, vp.
