"EndorphinPTNCI" . "endorphinPTNCI-GLOSSCDR0000449772" . "One of several substances made in the body that can relieve pain and give a feeling of well-being. Endorphins are peptides (small proteins) that bind to opioid receptors in the central nervous system. An endorphin is a type of neurotransmitter.NCI-GLOSS" . . . . "One of the three major groups of endogenous opioid peptides. They are large peptides derived from the pro-opiomelanocortin precursor. The known members of this group are alpha-, beta-, and gamma-endorphin. The term endorphin is also sometimes used to refer to all opioid peptides, but the narrower sense is used here; OPIOID PEPTIDES is used for the broader group.MSH2002_06_01" . "C0014242"^^ . "Endorphin"^^ . "Endorphin"^^ . . "C469"^^ . "Endogenous OpiatesSYNCI" . "Neuroreactive Substance or Biogenic Amine"^^ . "Endorphin"^^ . "Biologically Active Substance"^^ .