What are biomarkers? How doctors assess health and pooling people's cells reveals new markers—a biologist explains

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Health & Medicine United Kingdom

A family of five is exposed to the flu virus, but only two of them get sick. A lifelong chain-smoker lives 100 years, while a professional athlete in their prime dies of an unexpected heart attack. A drug fails a clinical trial due to harmful side effects in a subset of patients despite showing good results in others.

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