3322
There was a direct correlation ( rho = 0 . 718 ) between peptide binding to model membranes and peptide ability to inhibit IL - 2 .
 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