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.
Omholt SW, Kirkwood TBL.Omholt SW, et al. Among authors: kirkwood tbl.Proc Natl Acad Sci U S A. 2021 Jun 1;118(22):e2102088118. doi: 10.1073/pnas.2102088118.Proc Natl Acad Sci U S A. 2021.PMID: 34031251Free PMC article.
van den Heuvel J, Saastamoinen M, Brakefield PM, Kirkwood TB, Zwaan BJ, Shanley DP.van den Heuvel J, et al. Among authors: kirkwood tb.Am Nat. 2013 Feb;181(2):E28-42. doi: 10.1086/668818. Epub 2013 Jan 14.Am Nat. 2013.PMID: 23348784