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.
Evaluation of the integrity of the Poly(vinyl alcohol) (PVA) beads. (A) Leakage of cells from the beads, after 7 days of being prepared. (B) Filtrated solution (f/2 medium and addition of pharmaceuticals) of the control group, after the removal of the beads of PVA without cells. (C) Evaporation of the water, a film of PVA settled at the bottom of the glass beaker.
