22040
In long - term differentiation assays , responses of h - OB to DPHD were significant at 10nM , and optimal response in most cases was at 100nM .
 Chemical: DPHD
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: DPHD