β-cell serotonin production is associated with female sex, old age, and diabetes-free condition
Keywords: MEP; β-cell; Islet; Diabetes; Serotonin; Age; Sex; FFPE; formalin-fixed paraffin-embedded; NET; neuroendocrine tumour; NSE; neuron-specific enolase; SCN; serotonin concentration normalized with the corresponding protein concentration; UPLC-MS/MS; ultra-perfor