20595
However , in the absence of RNase R and PNPase the accumulation of the shorter tRNA ( Cys ) was more pronounced and the mature form was not recovered .
 Chemical: Cys
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: Cys