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We exhume the experiments of Beatrice Gelber on Pavlovian conditioning in the ciliate Paramecium aurelia, and suggest that criticisms of her findings can now be reinterpreted. Gelber was a remarkable ...

Does this intimate relationship help or harm the amoeba? Shu, Brock, Geist et al. studied the relationship between a widely studied species of social amoeba and two species of bacteria that can live ...