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. 2020 Apr 20;117(17):9145–9147. doi: 10.1073/pnas.2004493117

Fig. 1.

Fig. 1.

Ye et al. (4) observe higher occurrences of TEs near immune genes. They hypothesize that the abundance of TEs in immune-associated regions of the mouse genome has enabled their regulatory cooption as immune enhancers, potentially facilitating the rapid regulatory evolution needed for adaptive immunity.