Summary of significant mRNA and binding changes associated with fear acquisition and extinction. (A) Significant changes associated with paired tone + shock, P; unpaired tone + shock, U; extinction, E; and context training, C, in LA, BL and CE nucleus of the amygdala. (B) Significant changes in paired and unpaired groups as percentages of the home control group. (C) Significant changes in extinction and context groups as percentages of the no extinction control group.