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.
de Sousa M, Tilney NL, Kupiec-Weglinski JW.de Sousa M, et al. Among authors: tilney nl.Immunol Today. 1991 Aug;12(8):262-6. doi: 10.1016/0167-5699(91)90123-B.Immunol Today. 1991.PMID: 1910447Review.