22886
Screening assays with 12 available human recombinant UDP - glucuronosyltransferases ( UGTs ) demonstrated that UGT1A9 was the predominant UGT isoform involved in R - ornidazole glucuronidation , whereas S - ornidazole glucuronidation was almost exclusively catalyzed by UGT2B7 .
 Chemical: UDP; Chemical: R - ornidazole; Chemical: S - ornidazole
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: UDP; Chemical: R - ornidazole; Chemical: S - ornidazole