21253
We used Photoactivatable - Ribonucleoside - Enhanced Crosslinking and Immunoprecipitation ( PAR - CLIP ) in HEK293 cells and identified a largely overlapping set of ~ 3000 mRNAs at ~ 9500 sites located in the 3 ' UTR and CDS .
 Chemical: Ribonucleoside
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: Ribonucleoside