Assertion: melatonin | /r/CapableOf | control sleep cycles
Facets:
Source sentences:
text: Secreted at night by the pineal gland in the brain, melatonin is thought to control sleep cycles, which are frequently disturbed in the elderly.
text: Secreted at night by the pineal gland in the brain, melatonin is thought to control sleep cycles, which are frequently disturbed in the elderly -- and kids with autism, she says.