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.
Expression of developmentally important genes. qRT-PCR was used to measure the mRNA levels of various genes known to play a role in lung development. Each expression level is expressed relative to HGPRT. The asterisk indicates a significant difference (*, p value < 0.05; **, p value < 0.01) based on a Student's two-tailed t test for samples of unequal variance. All doxycycline treatments were for at least 12 days.
