There are no reasons to believe that humans are exceptional, they have all required enzymes (DDO, DAO).
NADPH oxidase | Lysergic acid diethylamide | fatty acid | acid | oxidase | Lords of Acid | Velvet Acid Christ | sulfuric acid | Cytochrome c oxidase | The Acid House | cytochrome c oxidase | salicylic acid | Rosmarinic acid | Oxidase | Monoamine oxidase | Fatty acid | cytochrome ''c'' oxidase | Vic Acid | The Electric Kool-Aid Acid Test | The Acid House (film) | tannic acid | Sulfonic acid | Stringfellow Acid Pits | Red fuming nitric acid | Omega-3 fatty acid | Nucleic acid sequence | Mosher's acid | monoamine oxidase | lysergic acid diethylamide | humic acid |