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.
Bender A, Kabelitz D.Bender A, et al. Among authors: kabelitz d.Cell Immunol. 1990 Jul;128(2):542-54. doi: 10.1016/0008-8749(90)90047-u.Cell Immunol. 1990.PMID: 2141552