RT Journal Article SR Electronic T1 An ancient integration in a plant NLR is maintained as a trans-species polymorphism JF bioRxiv FD Cold Spring Harbor Laboratory SP 239541 DO 10.1101/239541 A1 Brabham, Helen J. A1 Hernández-Pinzón, Inmaculada A1 Holden, Samuel A1 Lorang, Jennifer A1 Moscou, Matthew J. YR 2018 UL http://biorxiv.org/content/early/2018/01/08/239541.abstract AB