2402
Live circular tissue slices of nearly identical diameter and thickness can be generated from most tissues by the use of two instruments ; a coring tool to cut cylindrical tissue cores which are subsequently sliced by a microtome into thin circular sections 5 - 8 mm in diameter and 50 - 300 microns thick .
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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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