10275
When expressed in immature osteoblasts , Notch arrests their differentiation , causing osteopenia , and when expressed in osteocytes , it causes an initial suppression of bone resorption and increased bone volume , a phenotype that evolves as the mice mature .
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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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