Initiation of T cell signaling by CD45 segregation at 'close contacts' by Chang, VT, Fernandes, RA, Ganzinger, KA, Lee, SF, Siebold, C, McColl, J, Jönsson, P, Palayret, M, Harlos, K, Coles, CH, Jones, EY, Lui, Y, Huang, E, Gilbert, RJC, Klenerman, D, Aricescu, AR, Davis, SJ