A novel Föster resonance energy transfer (FRET) immunoassay based on persistent luminescence nanoparticles (PLNP) was established for prostate specific antigen (PSA) detection in serum and cell extracts without in situ excitation. The specific FRET behavior allows highly selective and sensitive ratiometric photoluminescent detection of PSA in biological samples.
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Wu et al. (2015) studied this question.
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