title: Immunization against the observational conditioning of snake fear in rhesus monkeys.
mesh_terms: D000818:Animals; D003213:Conditioning, Psychological; D005239:Fear; D005260:Female; D007100:Imitative Behavior; D007266:Inhibition, Psychological; D008253:Macaca mulatta; D008297:Male; D012911:Snakes; D012931:Social Environment