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.
Variations of ARG subtypes in different samples over the course of chlortetracycline administration. a Principal component analysis of ARG subtypes. b Heatmap of variations of ARG subtypes based on the relative abundance of ARG subtypes. Significant (P < 0.05) increases and decreases are shown by border lines of cells colored by red and black, respectively. ARG subtypes with an average abundance > 1% are shown. See Additional file 2: Table S4 for the relative abundances of ARG subtypes
