Phycoerythrin (1 mg) was dialyzed overnight at 4 °C against NaHCO 3, pH 8.4, and was allowed to react for 2 h at 37 °C with 5 mg NP-OSu (4-hydroxy-3-nitrophenylacetic acid active ester; ...

Regulatory T cells can adopt specialized differentiation programs in the periphery. Kallies and co-workers show that IRF4 and Blimp-1 control the acquisition of regulatory T cell effector ...