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Fig. 4. Results of Experiment 3. Bees trained at unit 10 and then tested in (A) the
training tunnel following a `dummy shift', (B) the training tunnel following
no shift, (C) a tunnel in which bees were trained at unit 5 and (D) a fresh
tunnel devoid of scent. Bees in C searched at a significantly shorter distance
than in A, B and D, indicating that scent `pulled' searches towards unit 5.
Inverted triangles, training location with scent; diamond, scent location;
squares, training location without scent. See
Fig. 2 for further details.