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Figure 4


Fig. 4. The effect of a single 6 h exposure to 30 µmol l-1 ketanserin (A) and 1 µmol l-1 RU-486 (B) on Jurea in R. marmoratus (Series VI). Values are expressed as means ± s.e.m. (N=8). The arrows indicates the time at which the single dose of the drug was administered. Treatment values (dotted lines) labeled with an asterisk are significantly different from control values (solid lines) at corresponding time intervals (P<0.05). White and black bars above the graph indicate periods of light and dark, respectively.