5827
While the natural product berberine is a weak DNA binder , the 8 , 8 - DDBs displayed no affinity for DNA , as assessed by changes in the melting temperature of poly ( dA . dT ) DNA .
 Chemical: 8 , 8 - DDBs; Chemical: poly ( dA . dT )
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: 8 , 8 - DDBs; Chemical: poly ( dA . dT )