10320
Environmental scanning electron microscopy ( ESEM ) and confocal laser scanning microscopy ( CLSM ) show that dual asymmetric centrifugation leads to a smoothing of the particle surface , whereas the mortar / pestle blending results in an uneven surface and particle destruction .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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