preferred_name: arginine + H2O => ornithine + urea [ARG1] (Canis familiaris)
preferred_name_lc: arginine + h2o => ornithine + urea [arg1] (canis familiaris)
label: arginine + H2O => ornithine + urea [ARG1] (Canis familiaris)
label_lc: arginine + h2o => ornithine + urea [arg1] (canis familiaris)