The flavonoid, quercetin, differentially regulates Th-1 (IFN-γ) and Th-2 (IL4) cytokine gene expression by normal peripheral blood mononuclear cells. - Nair,M.PN.; Kandaswami,C.; Mahajan,S.; Chadha,K.C.; Chawda,R.; Nair,H.; Kumar,N.; Nair,R.E.; Schwartz,S.A. (Biochim Biophys Acta, 2002)