About: http://webisa.webdatacommons.org/366603899

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Since codeine is a naturally occurring alkaloid in the same opium poppy juice that is the source of morphine used as the starting material for heroin synthesis, codeine may be found in the urine of heroin users.
http://www.w3.org/ns/prov#wasQuotedFrom	drugtestinfo.com