3873
In contrast to the radius , neither trabecular nor cortical BMD declined with age in the tibia of HBM cases , suggesting attenuation of age - related bone loss in weight - bearing limbs contributes to the observed bone phenotype .
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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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