On the hunt for better cancer screening tests, Johns Hopkins researchers led a proof of principle study that successfully identified tumour DNA shed into the blood and saliva of 93 patients with head and neck cancer. The team state that they have shown that tumour DNA in the blood or saliva can successfully be measured for these cancers.  The data findings showed that testing saliva … Continue reading DNA shed from human head and neck tumours detected in blood and saliva for the first time.