The lab-on-a-chip (loc) is a small device with a huge poten tial. It can run dozens of diagnostic tests on human dna in a few minutes. Give the device a gob of spit or a drop of blood and it will tell you whether or not you are sick without any need to send your dna to a laboratory. In poor countries iocs could of fer diagnostics to millions who lack access to expensive laborato ries.
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