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.
Popper AN, Clarke NL.Popper AN, et al.Comp Biochem Physiol A Comp Physiol. 1976 Jan;53(1):11-8. doi: 10.1016/s0300-9629(76)80003-5.Comp Biochem Physiol A Comp Physiol. 1976.PMID: 176No abstract available.
Clarke NL, Popper AN, Mann JA Jr.Clarke NL, et al. Among authors: popper an.Biophys J. 1975 Apr;15(4):307-18. doi: 10.1016/S0006-3495(75)85821-8.Biophys J. 1975.PMID: 1125389Free PMC article.