Supplementary Figure 1: Custom-made social-choice self-administration apparatus.
From: Volitional social interaction prevents drug addiction in rat models

(Top) Five steps to build the apparatus, starting with a Standard Modular Operant Test Chamber with Modified Top for Rat (ENV—008CT, Med Associates). (Bottom) Picture of the apparatus in the configuration we used, plus a list of all the Med Associates components. Related to Fig. 1J.