Behavioral tests in the rat model of HD after contralateral transplantation of HB1.F3.BDNF cells. (A) Experimental scheme showing the schedules for behavioral training and three consecutive tests as well as toxin-induced HD modeling and cell transplantation. (B) In the apomorphine-induced rotation, stepping and rotarod tests, behavioral performance of HB1.F3.BDNF transplanted rats (n=13) was improved at 6 weeks after transplantation, compared with vehicle-injected rats (n=8). Data are presented as mean±SEM. *denotes p<0.5 and **denotes p<0.001 in two-way ANOVA.