Researchers have developed devices to automate blood smears. Their devices, called autohaem smear and smear+, can consistently create high-quality smears equivalent to those created by human experts, automating the smearing process so every smear is correct and consistent. A key goal of the project was to make the devices accessible to as many people as possible, so the researchers designed their devices to be easy to build, using readily available or 3D-printed components.
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Source: ScienceDaily