Figure 1. Monoamine signaling in human fetal pancreas.

• A–D
  RNA‐seq of fetal pancreata during gestational weeks 7–14 revealed the presence (or lack) of molecular determinants for serotonin (A), epinephrine/norepinephrine (C), and dopamine (D) signaling. Expression of the vesicular monoamine transporter (SLC18A2; Vmat2), which is non‐selective for monoamines, was plotted separately (B). Data were expressed as log counts per million mapped reads (logCPM).