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The alterations in differentiation of osteoprogenitor cells , together with the failure of mineralization , resulted in significantly lower rates of bone formation ( as measured by fluorochrome labeling ) in the magnesium - deficient rats .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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