is glutathione a typical peptide Glutathione-Related Enzymes and Proteins: Review Glutathione
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Additionally, they boost sperm vitality, regulate receptor expression on the sperm surface, and promote recognition and union between sperm and ovum (Sysoeva et al., 2021)

Novel Mechanism of Fatty Acid Sensing in Enteroendocrine Cells: Specific Structures in Oxo-Fatty Acids Produced by Gut Bacteria Are Responsible for CCK Secretion in STC-1 Cells via GPR40

10.2147/JN.S140614 2 Alvarez-SuarezP.GaworM.PrszyskiT

This response was caused primarily by GH hypersecretion, as expression of a GH antagonist resulted in improvement of glucose homeostasis [129, 229]
