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Fig. 1. General percentage of proboscis extensions (%PEG) from two
different groups of animals that received either unscented or scented (50
µl l-1) 1.8 mol l-1 sucrose solution during a single
trophallactic interaction. Asterisks indicate statistical differences
(G-test, ***P<0.001; see Results for details).
The number of animals is given in parentheses.