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Kary Mullis was born on December 28, 1944 in Lenoir City, Tennessee. He is an American biochemist who won the Nobel Prize in Chemistry in 1993 for his invention of the polymerase chain reaction (PCR). PCR is a technique used to amplify DNA, and it has revolutionized molecular biology. Mullis is also known for his controversial views on HIV/AIDS and his advocacy for alternative medicine.