| http://www.w3.org/ns/prov#value | - With fluorescent labels, including fluorescent dyes and nanocrystals (quantum dots) which can be treated as fluorescent particles (Yguerabide et al., Analytical Biochemistry 262:157-176, 1998), it is possible to detect a single labeled particle (U.S. Pat. No. 5,573,909 to Singer et al. and U.S. Pat. No. 6,214,560 to Yguerabide et al.).
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