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. Author manuscript; available in PMC: 2007 Mar 1.
Published in final edited form as: Am J Physiol Endocrinol Metab. 2006 Mar;290(3):E566–E572. doi: 10.1152/ajpendo.00427.2005

Fig. 4.

Fig. 4

A: model simulation of CS-induced PRL rhythm. B: oscillation in DA neuron activity is out of phase with PRL rhythm. Although mutual interaction between DA neurons and lactotrophs is sufficient to generate daily rhythm, VIP input from SCN (dashed line) entrains rhythm to photoperiod. All curves have been normalized.