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.
Green MP, Spate LD, Parks TE, Kimura K, Murphy CN, Williams JE, Kerley MS, Green JA, Keisler DH, Roberts RM.Green MP, et al. Among authors: keisler dh.Reprod Biol Endocrinol. 2008 Jun 9;6:21. doi: 10.1186/1477-7827-6-21.Reprod Biol Endocrinol. 2008.PMID: 18541015Free PMC article.