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Fig. 5. Comparison of the total amount of light (Ltot)
produced, as a response to 5-HT (0.03 mmol l–1), between the
different months when experiments were performed. Some specimens tested in
April and June were very bright, hence the large mean value of
Ltot and the large variation in response in these months.
Number of replicates (non-converging data in brackets, not included in the
analysis): Sept., N=8 (1); Nov., N=9 (1); Dec.,
N=10; Apr., N=14 (4); June, N=10 (1); Sept.,
N=10 (2); error bars indicate s.e.m.