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Figure 3


Fig. 3. Diurnal urea excretion (Jurea) in food-deprived Rivulus marmoratus exposed to a photoperiod of 0 h:24 h light:dark (Series III). The black bar above the graph indicates the dark period. Values are expressed as means ± s.e.m. (N=8). Jurea values followed a significant rhythm (F2,9=60.7, P=0.00001).