Abstract
A review of the major types of biological molecules and systems (including antibodies, enzymes and whole cells) on which biosensors can be based is presented. Specific emphasis is placed on a critical assessment of the relative strengths and weaknesses of the respective technologies and on analysis of the importance of practical considerations such as sample interference, signal-to-noise ratio and biomolecule stability. The importance of efficient coupling of the biological and transducer components of a biosensor is highlighted. Future trends and directions in biosensor research and commercial aspects of the technology are also discussed. The article concludes with a summary of current biosensor research activities at the GEC-Marconi Hirst Research Centre.
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