Differences in Number of Midbrain Dopamine Neurons Associated with Summer and Winter Photoperiods in Humans.

PLoS One · 2016 · PMC4948786 · PMID 27428306

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did not reach statistical significanceno p-value reported

Although there was a ~2-fold higher density of DAT+ neurons and a ~2-fold lower density of DAT- neurons in summer compared with winter, these differences did not reach statistical significance ( Table 3 & Fig 2C ).

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