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.
Meng QC, Johansson JS, Eckenhoff RG.Meng QC, et al.J Chromatogr B Analyt Technol Biomed Life Sci. 2002 Jul 5;774(1):89-95. doi: 10.1016/s1570-0232(02)00208-8.J Chromatogr B Analyt Technol Biomed Life Sci. 2002.PMID: 12052726
Meng QC, Zou H, Johansson JS, Eckenhoff RG.Meng QC, et al.Anal Biochem. 2001 May 1;292(1):102-6. doi: 10.1006/abio.2001.5074.Anal Biochem. 2001.PMID: 11319823