Trends in Biosensors for HPV: Identification and Diagnosis

Figure 2

Schematic representation of a magnetic genosensor for the detection of HPV. The DNA probe was immobilized on the transducer surface (a). Then, biotinylated DNA target was hybridized (b). Magnetic particles modified with streptavidin were added on the genosensor (c). Measuring the magnetic signal could characterize the bioactivity of biodevice (d). It is important to highlight that the magnetic signal intensity is proportional to the number of biospecific interactions between the streptavidin molecules and the biotin groups.