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.
Ansar Ahmed S, Young PR, Penhale WJ.Ansar Ahmed S, et al. Among authors: penhale wj.Clin Exp Immunol. 1983 Nov;54(2):351-8.Clin Exp Immunol. 1983.PMID: 6360435Free PMC article.
Ahmed SA, Penhale WJ.Ahmed SA, et al. Among authors: penhale wj.Clin Exp Immunol. 1982 May;48(2):367-74.Clin Exp Immunol. 1982.PMID: 7049452Free PMC article.
Ahmed SA, Penhale WJ.Ahmed SA, et al. Among authors: penhale wj.Clin Exp Immunol. 1981 Sep;45(3):480-6.Clin Exp Immunol. 1981.PMID: 6896018Free PMC article.