2923
Bone marrow cells from CD74 KO mice formed 15 % more osteoclast - like cells ( OCLs ) with macrophage colony - stimulating factor ( M - CSF ) and receptor activator of NF - kappa B ligand ( RANKL ) ( both at 30 ng / mL ) compared to WT .
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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