Assertion: adrenal medulla's hormone | /r/HasProperty | high
Facets:
Source sentences:
text: MSH) pituitary, peptide hormone pituitary melatonin - (N-acetyl-5-methoxytryptamine) pineal amino acid amino (precursor tryptophan) hormone involved with the diurnal cycle, melatoinin levels are high in dark, low in daylight.