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Aging and human CD4(+) regulatory T cells.
Hwang KA, Kim HR, Kang I. Hwang KA, et al. Mech Ageing Dev. 2009 Aug;130(8):509-17. doi: 10.1016/j.mad.2009.06.003. Epub 2009 Jun 18. Mech Ageing Dev. 2009. PMID: 19540259 Free PMC article.