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Nowadays, smartphones are incredibly powerful portable computers that include handy devices such as multimegapixel cameras, and they can be found in both developing and developed countries. Increasingly, researchers are exploring ways for smartphones to be used not only for posting selfies and playing video games, but also to help save lives by rapidly performing medical tests anywhere there are smartphones — that is, virtually anywhere around the world.
A common medical test involves measuring the levels of red blood cells and white blood cells in the blood. Standard methods for classifying and counting blood cells are either complex and expensive or labor-intensive and time-consuming. Now, scientists have developed a lantern-size device that can measure blood-cell levels using magnetic levitation. They also say their invention can be combined with smartphones to carry out this medical test rapidly, easily and affordably.
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