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Fig. 4. Odor-aversion learning of the slugs with IT amputation. (Ai) Experimental
schedule of the pre-conditioning IT amputation. (Aii) The avoidance rate (%)
of the slugs with the pre-conditioning IT amputation. (Bi) Experimental
schedule of the post-conditioning IT amputation. (Bii) The avoidance rate (%)
of the slugs with the post-conditioning IT amputation. The numbers above the
columns indicate the number of slugs used for the retention tests.
**P<0.01 by
2 test (pre-conditioning
amputation) or by Fisher's exact probability test (post-conditioning
amputation).