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Arrest of hippocampal neurogenesis does not impair contextual fear conditioning (CFC) produced via tone-shock pairings. (A) Irradiated and sham mice were given 3 tone-shock pairings. Tone-elicited fear was assessed by presenting the tones in an alternate context. Context-elicited fear was tested by returning mice to the shock-paired context. Irradiation failed to affect freezing in the tone test session (B) or in the context test session (C).
