The absence of tetrahydrocannabinol from hops.
D002188:Cannabis / Q000032:analysis*; D002845:Chromatography; D013759:Dronabinol / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D010944:Plants / Q000032:analysis*; D013045:Species Specificity
D013759:Dronabinol