Self-Organized Criticality Theory and the Expansion of PD-1-Positive Effector CD4 T Cells: Search for Autoantibody-Inducing CD4 T Cells - Miyazaki, Yumi; Tsumiyama, Ken; Yamane, Takashi; Ito, Mitsuhiro; Shiozawa, Shunichi (Frontiers in Immunology, 2013)