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. Author manuscript; available in PMC: 2013 Feb 5.
Published in final edited form as: Mol Cell Endocrinol. 2011 Jul 18;349(1):13–19. doi: 10.1016/j.mce.2011.07.009

Figure 4. Inter-individual and inter-strain variation of the timing of melatonin secretion in rats.

Figure 4

Melatonin secretion, monitored from outbred Sprague Dawley (SD; n=6) and Wistar rats (n=8) and inbred PVG (n=4) and Lewis (LEW; n=4) rats, is normalized to the nocturnal peak values.