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.
Li N, Cattolico RA.Li N, et al. Among authors: cattolico ra.Mol Gen Genet. 1987 Sep;209(2):343-51. doi: 10.1007/BF00329664.Mol Gen Genet. 1987.PMID: 17191345
Boczar BA, Delaney TP, Cattolico RA.Boczar BA, et al. Among authors: cattolico ra.Proc Natl Acad Sci U S A. 1989 Jul;86(13):4996-9. doi: 10.1073/pnas.86.13.4996.Proc Natl Acad Sci U S A. 1989.PMID: 2740337Free PMC article.