A novel paper working electrode with Pt nanospheres grown in it (Pt-PWE) was first used as a sensor platform and then cancer cells were immobilized on the Pt-PWE (high affinity binding with aptamers). This electrode was first designed to achieve the in situ and real-time determination of H2O2 released from cancer cells to obtain an accurate determination.
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Liu et al. (2014) studied this question.
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