14997
Conversely , the majority of the Lin - Sca1 - OPN + CD166 - cells ( CD166 - ) expressed high OC levels suggesting that CD166 - OB are more 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:
 None