The solution to HIV diagnosis in the Third World could be provided by a portable protein detector powered by a nine volt battery. The cost-effective Pocket uses a combination of silver-based chemistry, a diagnostic chip, and an optical sensor to do the same job as bulky, expensive and resource-hungry hospital machinery ― at a fraction of the time and cost. Researchers at Harvard University hope that their system, which has taken 18 months to develop, will provide a solution to diagnosis problems of infectious diseases ― particularly in the Third World where the infrastructure to support large-scale hospital machinery often does not exist.
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