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.
Quantitative calcified nodule density in MC3T3-E1 cell cultures after 21 and 28 days of exposure to induction medium. Densities represent the average area coverage of up to six fields of view collected from three independent experiments. Double asterisks (**) indicate a p < 0.05 level of significance.
