18777
A 9G DNAChip obtained by allowing the formation of a self - assembled monolayer ( SAM ) of oligonucleotides appended with nine consecutive guanines on the chip surface has been applied in the detection of biomarkers .
 Chemical: guanines
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: guanines