Extended Data Fig. 1: One-hour memory recall in VSH bees and NVS bees.
From: Chemical detection triggers honey bee defense against a destructive parasitic threat

Percentages of VSH bees and NVS bees displaying conditioned proboscis extension responses (PER) 1 hour after the final (6th) conditioning trial. All bees were trained to discriminate between an odorant paired with a sugar reward (CS+, healthy brood extract + VPS compounds) and a non-reinforced odorant (CS-, healthy brood extract). The figure shows the percentages of bees responding to the CS+, the CS- and to a novel odour not presented during the learning phase (Diff, Nonanol), (GLMM, nVSH = 32, nNVS = 28). Different letters indicate significant results in the analyses.