Nitric Oxide nitric oxide 118 article 102 controlled study 74 nonhuman 74 Animals 62 priority journal 62 Nitric oxide 50 metabolism 40 unclassified drug 38 animal cell 34 enzyme activity 34 Mice 32 chemistry 30 mouse 30 Models, Molecular 28 Female 26 Oxidation-Reduction 26 male 26 Humans 24 female 24 Male 22 animal experiment 22 molecular dynamics 22 oxygen 22 Kinetics 20 Oxygen 20 nitric oxide synthase 20 oxidation reduction reaction 20 protein expression 20