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Propranolol does not impair retention of non-reactivated fear memories. A: Schematic of the experimental design. Rats received two or five footshocks. 1 or 36 days after training, saline or propranolol was injected in the absence of memory reactivation and tested one day later. Propranolol did not impair long-term memory in any experimental groups (B). NR: Noreactivation.
