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Tartrate - resistant acid phosphatase ( TRAP ) staining revealed increased osteoclast numbers in tibias of 2 - month - old Col1a1 - Cnn1 mice , and increased numbers of osteoclasts co - cultured with Col1a1 - Cnn1 osteoblasts .
 Chemical: Tartrate
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Tartrate