Today's expert film has been supplied by Kings College London and explores how saliva is used to diagnose HIV.

Dive into the fascinating world of saliva and its vital role in protecting our oral health, aiding in tasting, swallowing, and speaking. Explore how research into salivary functions and composition can lead to innovative treatments for gland diseases and systemic health diagnostics, including future prospects for non-invasive disease detection using saliva. This video reveals the importance of spit beyond the mouth, offering insights into its evolutionary significance and potential in personalised medicine.