lymphocytic choriomeningitis virus: the RNA virus that causes lymphocytic choriomeningitis; infects mice and monkeys and dogs and guinea pigs and human beings
agent: an active and efficient cause; capable of producing a certain effect
reciprocal inhibition: a method of behavior therapy based on the inhibition of one response by the occurrence of another response that is mutually incompatible with it; a relaxation response might be conditioned to a stimulus that previously evoked anxiety