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. 2014 Nov 6;14:8. doi: 10.1186/s12899-014-0008-y

Table 1.

Statistics of neckteeth formation

df F p
Chaoborus (Ch) 1, 8 94.0 < 0.001
Melatonin (M) 1, 8 7.49 0.026
Ch × M 1, 8 3.72 0.09

Results of the two-factorial ANOVA (df = degrees of freedom) for the neckteeth formation of D. pulex which were or were not incubated with Chaoborus extract (factor “Chaoborus”) and with or without addition of melatonin (factor “Melatonin”).