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In Africa, waiting for blood work can take weeks, and many people don't bother getting their results. A new device could make testing in remote villages a possibility, and that could lead to drastically improved treatment. If you were concerned you had HIV (and lived in America), it would be easy enough to get some blood drawn at a clinic near your house, and wait a few days (or even hours) for the results.

By Philip Ball of Nature magazine Quentin Tarantino's 1994 film Pulp Fiction is packed with memorable dialogue--"Le Big Mac," say, or Samuel L. [More]

By Philip Ball of Nature magazine Quentin Tarantino's 1994 film Pulp Fiction is packed with memorable dialogue--"Le Big Mac," say, or Samuel L.