FOR centuries, the story of the Plague of Justinian, history's first recorded plague pandemic, was woven solely from ancient texts describing a mysterious and devastating sickness that helped weaken an empire. Now, as reported in the journal "Genes" in the article Genetic Evidence of Yersinia pestis from the First Pandemic – a global team of researchers from USA, Australia and India used stringent ancient DNA protocols to extract highly degraded ancient DNA in dental pulp and human teeth.