Fresh look at potential cannabis therapies Michael Gross  Current Biology  Volume 11, Issue 23, Pages R947-R948 (November 2001) DOI: 10.1016/S0960-9822(01)00568-1

figure Leaves of contention: Cannabis plants shown here growing illegally but attitudes in many countries are now shifting towards proper appraisal of the many potential uses that come from historical and anecdotal sources and changes in the criminal status of possesing the drug. Photograph; Science Photo Library. Current Biology 2001 11, R947-R948DOI: (10.1016/S0960-9822(01)00568-1)