Cancer

"Scientists at Johns Hopkins University found that a blood test could detect cancer DNA more than three years before a patient receives a clinical diagnosis."https://www.smithsonianmag.com/smart-news/cancer-dna-can-be-detected-in-the-bloodstream-up-to-three-years-before-diagnosis-study-suggests-180986862/?utm_source=join1440&user_id=66c4c92f5d78644b3ac5d5b4