Cytomegalovirus-seropositivity has a profound influence on the magnitude of major lymphoid subsets within healthy individuals
S Chidrawar, N Khan, W Wei, A McLarnon, N Smith, L Nayak, and P Moss
Clinical & Experimental Immunology 2009 vol. 155 (3) pp. 423-432
http://doi.wiley.com/10.1111/j.1365-2249.2008.03785.x