<div>What if you could simply provide a urine sample rather than undergo a painful surgical procedure to find out if your cancer was responding to treatment? It may seem too good to be true, but researchers at Pavol Jozef &Scaron;af&aacute;rik University in Ko&scaron;ice, Slovakia, have identified fluorescent molecules in urine that may allow patients with malignant melanoma to do just that.</div>