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An electric circuit in which plant enzymes are integrated directly into an electrode, allowing measurement of the molecules of biochemical interest.

Examples, potential biotrodes
• Bananas contain polyphenol oxidase, which measures dopamine.
• Corn kernels contain pyruvate decarboxylase, which measures pyruvate.
• Sugar beets contain tyrosinase.
• Jack beans contain urease.


A head harness that delivers EMF pulsations, which is said to have some nebulously defined health benefits, such as an anti-ageing effect. There is no peer-reviewed data supporting its efficacy.
References in periodicals archive ?
Enter the food-based electrodes. Fordetecting the neurotransmitter dopamine, Rechnitz and his University of Delaware colleague James S.
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