27899
Spatially resolved electron energy loss spectroscopy ( SR - EELS ) using scanning transmission electron microscope ( STEM ) allows the identification and determination of the spatial distribution of the components / elements of immuno - functionalized core - shell superparamagnetic magnetite nanoparticles .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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