Figure 1. Timeline of experimental procedures.

Mice are injected with Retrobeads^TM one week prior to behavioral acclimation. On days 1-3, mice are acclimated to the testing room. On days 4-6, mice are handled (to reduce their anxiety) and the test mice are acclimated to the testing chamber. On day 7, mice are exposed to the behavioral paradigm for labeling and sacrificed.