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.
Relationship between estimated model gene concentration and actual concentration of model genes, nirS (a), nahA (b), and E. coli O157 O-antigen biosynthesis gene (c). Closed circle, calculated by log (R′) = α log (fx/fλ) + β, in this study; open circle, estimation by hybridization kinetics. The solid line indicates the regression curve, and the diagonal dotted line indicates a 1:1 relationship. Error bars indicate standard deviations. No error bars are shown when smaller than symbols.
