Drying properties and DNA content of saliva samples taken before, during and after chewing gum

Drying properties of forensically relevant biological materials including saliva are lacking research despite being known to affect casework-relevant phenomena, including DNA transfer. We previously observed that saliva collected from someone chewing gum and deposited on various surfaces did not dry, raising questions about the effects of chewing gum on the drying properties of saliva. The DNA content of saliva samples under differing conditions...