An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Brudvig GW, Crabtree RH.Brudvig GW, et al.Proc Natl Acad Sci U S A. 1986 Jul;83(13):4586-8. doi: 10.1073/pnas.83.13.4586.Proc Natl Acad Sci U S A. 1986.PMID: 3460059Free PMC article.
Vrettos JS, Brudvig GW.Vrettos JS, et al. Among authors: brudvig gw.Philos Trans R Soc Lond B Biol Sci. 2002 Oct 29;357(1426):1395-404; discussion 1404-5, 1419-20. doi: 10.1098/rstb.2002.1136.Philos Trans R Soc Lond B Biol Sci. 2002.PMID: 12437878Free PMC article.