This protocol describes a new model by which healthy rats could contract depression over a given time periodthrough contagion by exposure to chronic unpredictable stressed (CUS) rats.
Zeldetz, V., Natanel, D., Boyko, M., Zlotnik, A., Shiyntum, H. N., Grinshpun, J., Frank, D., Kuts, R., Brotfain, E., Peiser, J. A New Method for Inducing a Depression-Like Behavior in Rats. J. Vis. Exp. (132), e57137, doi:10.3791/57137 (2018).