1020
In conclusion , to study and overcome TI region - based expression problems it is worthwhile to start out with a versatile vector containing exhaustive mutations in the periShine - Dalgarno sequences ; as a rule the coding MTI subregion can be kept unchanged .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None