Genetically decaffeinated coffee.
D000818:Animals; D002110:Caffeine / Q000737:chemistry / Q000378:metabolism*; D040503:Coffea / Q000737:chemistry / Q000235:genetics*; D003069:Coffee / Q000737:chemistry* / Q000266:history; D049668:History, 15th Century; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D008780:Methyltransferases / Q000235:genetics / Q000378:metabolism; D015394:Molecular Structure
D003069:Coffee; D002110:Caffeine; D008780:Methyltransferases