. Ring test. This is a technique to find out how much an experimental rat is intoxicated by a dose of cannabinoids the active compounds in cannabis. Photographed at the University of Milan, Italy. MODEL RELEASED Editorial Stock Photo - Afloimages
. Ring test. This is a technique to find out how much an experimental rat is intoxicated by a dose of cannabinoids (the active compounds in cannabis). Photographed at the University of Milan, Italy. MODEL RELEASED