Kary Mullis, inventor of the Polymerase Chain Reaction (PCR) test, answers questions on what the PCR test is, and how it's used. Filmed sometime in the 1990s. https://www.brighteon.com/2d4f2b32-a417-4f17-94d2-a58a0e2e4744 If you enjoy my work & what I share, subscribe to my free newsletter for updates & new reports. https://www.subscribepage.com/winwrites #pcrtest #kary-mulis #factsmatter #walkinverse