The next time you visit the doctor for a checkup, they may not need a vial of your blood. A sample of your spit might be all your doctor needs. Check out the following video from Inside Science TV from the American Institute of Physics.
The next time you visit the doctor for a checkup, they may not need a vial of your blood. A sample of your spit might be all your doctor needs. Check out the following video from Inside Science TV from the American Institute of Physics.