From: Different integration site structures between L1 protein-mediated retrotransposition in cis and retrotransposition in trans
Type of insertion
No. of insertions with extranucleotides
Frequency
5'-inverted L1
25
3.9%
5'-truncated L1
160
14.6%
5'-truncated Alu
126
11.7%
Full-length Alu
554
12.4%