Monotonic and undulating circadian variations in the rat myelogram

The experiments were performed on nonpedigree albino rats weighing 180-250 g with access to food and water ad l ibi tum that were changed every morning. The working day ha the vivarium began at 09:00 h. The electric light was switched on during the daytime and switched off in the evening and at night. Eight groups of rats (5 males and 5 females in each… (More)

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