18203
We demonstrated radiolytic ligation of oligodeoxynucleotides ( ODNs ) possessing disulfide bond and its application to regulation of DNA quadruplex formation .
 Chemical: disulfide
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: disulfide