8223
Mixed populations of different cell types were isolated from adult long bones of C57BL / 6J mice by enzymatic digestion , and subsequently subjected to FACS to purify and characterize osteoblast lineage cells via a selection strategy using antibodies against CD31 , CD45 , and alkaline phosphatase ( AP ) , specific for mature osteoblasts .
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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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