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.
Blake J, Li CH.Blake J, et al.Int J Pept Protein Res. 1975;7(6):495-501. doi: 10.1111/j.1399-3011.1975.tb02471.x.Int J Pept Protein Res. 1975.PMID: 1201912
Blake J, Li CH.Blake J, et al.Int J Pept Protein Res. 1976;8(6):589-95. doi: 10.1111/j.1399-3011.1976.tb02539.x.Int J Pept Protein Res. 1976.PMID: 186422