Printed Graphene Biosensors 

Cell-based biosensors can simulate the effect of various substances, such as drugs, on the human body in the laboratory. Depending on the measuring principle, though, producing them can be expensive. As a result, they are often not used. Cost factors for sensors that perform measurements electrically are the expensive electrode material and complex production. Scientists are now producing biosensors with graphene electrodes cheaply and simply in roll-to-roll printing. A system prototype for mass production already exists.
Source: Easy printing of biosensors made of graphene

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