A week of stimulation with anti-CD3+TGF-β, but not with TNP+TGF-β, resulted in a 2-fold increase in Foxp3+ cells in wildtype, ErbB2-tg and TNP-CD28null-Tg T effector cells.
A dramatic 30-fold increase in Foxp3+ cells was observed in TNP-Tg effector cells following exposure to TNP+TGF-β.