With its rapid development, the electrochemical biosensor has recently been widely used in gene diagnosis, environmental monitoring, and medical sciences. More and more attention has been focused on how to improve the sensitivity and selectivity of biosensor. In this review, the principle and composition of DNA electrochemical biosensor is simply introduced, the preparation of biological membrane, the application of indicator are specially emphasized, and the future prospect for the development in this field is given.
Animals ; Biosensing Techniques ; instrumentation ; Conductometry ; instrumentation ; DNA ; chemistry ; Electrochemical Techniques ; Electrodes ; Equipment Design ; Graphite ; chemistry ; Humans ; Metal Nanoparticles ; chemistry