12997
A new automated method of segmentation of bone from background and bone into its compact - appearing cortex , transitional zone , and trabecular compartment is described , with a new approach to quantification of cortical porosity .
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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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