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.
Tan F, Fang Y, Zhu L, Al-Rubeai M.Tan F, et al.Stem Cell Res Ther. 2020 Aug 26;11(1):368. doi: 10.1186/s13287-020-01886-2.Stem Cell Res Ther. 2020.PMID: 32847625Free PMC article.Review.