The genome of the heartwater agent Ehrlichia ruminantium contains multiple tandem repeats of actively variable copy number.
Collins NE, Liebenberg J, de Villiers EP, Brayton KA, Louw E, Pretorius A, Faber FE, van Heerden H, Josemans A, van Kleef M, Steyn HC, van Strijp MF, Zweygarth E, Jongejan F, Maillard JC, Berthier D, Botha M, Joubert F, Corton CH, Thomson NR, Allsopp MT, Allsopp BA.
Collins NE, et al.
Proc Natl Acad Sci U S A. 2005 Jan 18;102(3):838-43. doi: 10.1073/pnas.0406633102. Epub 2005 Jan 6.
Proc Natl Acad Sci U S A. 2005.
PMID: 15637156
Free PMC article.