22965
The depletion force due to polymer addition is proportional to the product of the osmotic pressure and the area of the nanodisc , even for concentrated polymer solutions .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None