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.
Marsh LE, Terry R, Whittaker AL, Hiendleder S, Ralph CR.Marsh LE, et al. Among authors: whittaker al.Animals (Basel). 2020 Mar 18;10(3):504. doi: 10.3390/ani10030504.Animals (Basel). 2020.PMID: 32197320Free PMC article.
Whittaker AL, Liu Y, Barker TH.Whittaker AL, et al.Animals (Basel). 2021 Mar 3;11(3):673. doi: 10.3390/ani11030673.Animals (Basel). 2021.PMID: 33802463Free PMC article.Review.