The content of (-)  9 -trans-tetrahydrocannabinol (  9 -thc) does not explain all biological activity of some Brazilian marihuana samples.
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D001681:Biological Assay; D001938:Brazil; D002188:Cannabis / Q000032:analysis*; D002389:Catatonia; D002849:Chromatography, Gas; D013759:Dronabinol / Q000032:analysis; D005860:Germany, West; D006801:Humans; D008297:Male; D051379:Mice; D009043:Motor Activity / Q000187:drug effects; D011817:Rabbits; D051381:Rats; D012907:Smoking
D013759:Dronabinol