Association between striatal accumulation of FosB/ΔFosB and long-term psychomotor sensitization to amphetamine in mice depends on the genetic background

▶ Behavioral sensitization to amphetamine is consistently associated with increased FosB/ΔFosB immunostaining in the ventro-medial striatum of C57BL/6J mice regardless of the sensitizing procedures and protocols. ▶ Behavioral sensitization to amphetamine is not associated with increased FosB/ΔFosB immunostaining in any striatal compartments of DBA/2J mice.