Guanine + H2O => Xanthine + NH4+ (Drosophila melanogaster)
guanine + h2o => xanthine + nh4+ (drosophila melanogaster)
Guanine + H2O => Xanthine + NH4+ (Drosophila melanogaster)
guanine + h2o => xanthine + nh4+ (drosophila melanogaster)