more than 50 % of a group of healthy homosexuals in israel were found to have an activated interferon ( ifn ) system as evidenced by markedly elevated blood ifn levels , increased in vitro production of ifn by unstimulated peripheral blood mononuclear cells and huifn-alpha and huifn-gamma production by appropriately stimulated cells , and a surprisingly high incidence of an antiviral state of cells .
C1321301
peripheral blood
C0007634
cells