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.
Principle coordinates, derived from the Bray-Curtis dissimilarity index, plotted according to ≤ vs. > median weight adjusted TAC dose (left) and ≤ vs. > median Level/Dose (L/D) ratio (right). Ellipses represent a 95% confidence interval for the data, assuming a normal distribution.
