“We don’t want to get mixed up in a technological arms race,” Hutch Hutchison, vice president of design and co-founder of phone startup Xor, told me about the unusual Xor Titanium phone, a new luxury ...

Xanthine oxidoreductase (XOR) catalyzes the oxidation of hypoxanthine to xanthine, and of xanthine to uric acid. XOR also enhances the production of reactive oxygen species and causes endothelial ...