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.
Barja de Quiroga G, López-Torres M, Pérez-Campo R.Barja de Quiroga G, et al.EXS. 1992;62:109-23. doi: 10.1007/978-3-0348-7460-1_12.EXS. 1992.PMID: 1450578Review.
Barja de Quiroga G, López-Torres M, Pérez-Campo R, Rojas C.Barja de Quiroga G, et al.Anal Biochem. 1991 Nov 15;199(1):81-5. doi: 10.1016/0003-2697(91)90272-u.Anal Biochem. 1991.PMID: 1807165