Sentence:  Analytes or reactants can be transported by free field electrophoresis to any specific <WSD>micro-location</WSD> where the analytes or reactants are effectively concentrated and reacted with the specific binding entity at said <WSD>micro-location</WSD>. 
Meaning of the word marked with <WSD> tags:  (countable) A location specified on a microscopic scale, such as on a biochip or on a DNA molecule.