8852
This result predicts that human Pol delta may introduce more than a million ribonucleotides into the nuclear genome per replication cycle , an amount recently reported to be present in the genome of RNase H2 - defective mouse cells .
 Chemical: ribonucleotides
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: ribonucleotides 
Answer:
 Chemical: ribonucleotides