LONDON – Oxford University spinout Oxdx Ltd. has raised £2.6 million (US$3.6 million) in pre-seed funding to advance development of a technology for directly identifying infectious pathogens without the need to purify, culture or amplify samples first. The instant testing method uses a mixture of a single universal reagent, high resolution microscopy and machine learning, to identify specific species and strains of bacteria, viruses and other pathogens within minutes.