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Expression of Egr in the brains of orienting and control bees collected either 30 or 60 min post-collection, measured using qRT-PCR. MB, mushroom bodies; BR, all brain tissue other than mushroom bodies. Egr showed nearly twofold upregulation in mushroom bodies 30 min after orientation flight (P<0.0001). Egr was not differentially expressed between orienting bees and controls in BR samples at 30 min, or in MB 60 min after orientation flight.
