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Figure 1a-e: Feeding activity recorded from P-X pigeons first entrained to LD and then subjected melatonin infusion cycles. Melatonin was infused for 10 hours/day during the times indicated by the top boxes. Infusion of vehicle was continued with the same phase after the melatonin infusion was terminated (a,b,c,e only - bottom boxes). a, b) infusion period = 23.67, dose = 0.93 ug!hr; c) infusion period = 24.77, dose = 3.6 uglhr; d) infusion period = 24.41, dose = 3.6 uglhr; e) infusion period = 24.00, dose = 0.93 uglhr.


Figure 1a-e: Feeding activity recorded from P-X pigeons first entrained to LD and then subjected melatonin infusion cycles. Melatonin was infused for 10 hours/day during the times indicated by the top boxes. Infusion of vehicle was continued with the same phase after the melatonin infusion was terminated (a,b,c,e only - bottom boxes). a, b) infusion period = 23.67, dose = 0.93 ug!hr; c) infusion period = 24.77, dose = 3.6 uglhr; d) infusion period = 24.41, dose = 3.6 uglhr; e) infusion period = 24.00, dose = 0.93 uglhr.
Fig 1a	Fig 1b	Fig 1c	Fig 1d	Fig 1e