title: Viagra makes flowers stand up straight.
authors.forename: J
authors.initials: J
authors.lastname: Siegel-Itzkovich
mesh_terms: D009569:Nitric Oxide / Q000494:pharmacology; D010726:Phosphodiesterase Inhibitors / Q000494:pharmacology*; D010879:Piperazines / Q000494:pharmacology*; D010944:Plants / Q000187:drug effects*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D009569:Nitric Oxide; D000068677:Sildenafil Citrate