beta-endorphin pain-relieving peptide, chemical structure. endorphins are natural opioid neurotransmitter peptides that act like

beta-endorphin pain-relieving peptide, chemical structure. endorphins are natural opioid neurotransmitter peptides that act like

  • JPG 300 DPI

Image information

  • Author: dreamstime
  • License:buy for Personal Use & Commercial
  • File Type: JPG
  • Views: times