2391
Immunohistochemistry and immunogold labeling ( electron microscopy ) for OPN in Hyp bone likewise showed an accumulation of OPN and / or its fragments compared with normal wild - type bone .
 None
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