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A lab prototype CE‐nanospray‐MS platform with a high sensitivity porous sprayer was successfully applied in differential identification of Rhizoma coptidis in this paper. To obtain a stable and reliable nanospray, detailed optimizations about emitter geometry, buffer composition, emitter position, and spray voltage, as well as emitter cleanliness were discussed. Results showed that the reproducibility...
A facile and sensitive aptamer‐based protocol has been developed for protein assay on microfluidic platform with fluorescence detection using an off‐chip microarray scanner. Aptamer‐functionalized magnetic beads were used to capture thrombin that binds to a second aptamer fluorescently labeled by Cy3. Experimental conditions, such as incubation time and temperature, washing time, interfering proteins,...
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