418
Previous studies have demonstrated that the 21 - or the 72 - bp repeat transcriptional control elements enhance the efficiency of SV40 DNA replication in vivo , provided either of these repeats is located near the end of the core replication origin containing the 17 - bp A + T - containing sequence .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None