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What sanguine elixir are researchers transporting with drones?

Answer: blood

Researchers from Johns Hopkins University and Uganda Makerere University completed a proof-of-concept study in which blood was drawn from 56 adult subjects, loaded onto a drone and flown around for time periods ranging from six to 38 minutes.

The flown blood samples were compared with a control samples in a series of blood tests, and the results were nearly equivalent. Researchers hope to test next in Africa, where clinics are sometimes far from blood testing labs. The study results were published in the journal PLOS One.