Assertion: alkaloid's effect | /r/HasProperty | unclear
Facets:
value: as of 2013
type: TEMPORAL
Source sentences:
text: The overabundance of 5-HT3 receptors in cocaine conditioned rats display this trait, however the exact effect of 5-HT3 in this process is unclear.
text: As of 2013 , the effect of low-dose or acute opioid use on the endocrine system is unclear.