text: Huge DNA database opens door to mistakes: scientist The scientist who invented DNA fingerprinting two decades ago has warned that the huge expansion of the British national database, which now contains details of 2.5 million criminals, could 
inputs: Huge DNA database opens door to mistakes: scientist The scientist who invented DNA fingerprinting two decades ago has warned that the huge expansion of the British national database, which now contains details of 2.5 million criminals, could 