FIGURE 4

![FIGURE 4: Loganin's effects on serotonergic system markers, including 5-HT levels and receptor expression in the brain, are quantified in treated versus control mice.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6491506/bin/fphar-10-00409-g004.jpg)

> Source: Rui Shi et al. "Loganin Exerts Sedative and Hypnotic Effects via Modulation of the Serotonergic ." *Frontiers in pharmacology*, 2019. PMID: [31068813](https://pubmed.ncbi.nlm.nih.gov/31068813/)

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  <img src="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6491506/bin/fphar-10-00409-g004.jpg" alt="Loganin's effects on serotonergic system markers, including 5-HT levels and receptor expression in the brain, are quantified in treated versus control mice." />
  <figcaption>FIGURE 4. Loganin's effects on serotonergic system markers, including 5-HT levels and receptor expression in the brain, are quantified in treated versus control mice.<br>  Source: Rui Shi et al. "Loganin Exerts Sedative and Hypnotic Effects via Modulation of the Serotonergic ." <em>Frontiers in pharmacology</em>, 2019. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/31068813/">31068813</a></figcaption>
</figure>