13539
Sperm 8 - hydroxydeoxyguanine ( 8 - OHdG ) was measured by immunofluorescent assay using flow cytometry and genotypes were determined by OpenArray platform with a chip - based Taq - Man genotyping technology .
 Chemical: 8 - hydroxydeoxyguanine; Chemical: 8 - OHdG
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 - hydroxydeoxyguanine; Chemical: 8 - OHdG