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ELISA techniques have been combined with biosensors to form __________

(a) calorimetric biosensor

(b) piezo-electric biosensor

(c) immunosensor

(d) potentiometric biosensor

I have been asked this question in exam.

This intriguing question comes from Biosensors topic in section Biosensors of Enzyme Technology

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Correct answer is (c) immunosensor

To explain I would say: Immunosensor has been formed by combining ELISA techniques with the biosensor. The heat generated during a reaction is measured by using calorimetric biosensor. Piezo-electric biosensor measures the effects formed due to the mass of the reactants or products. Potentiometric biosensor measures the changes in the distribution of charges causing an electrical potential to be produced.

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