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.
Schematics of the connection (fictitious) elements between pipe (blood vessel) and continuum (tissue). (a) Capillary with plasma domain and porous wall, and surrounding tissue; (b) Pipe node A belongs to pipe and B belongs to tissue, while occupying the same spatial position.
