An abstract of the article "Target-Site Preferences of Sleeping Beauty Transposons in an Intron of the B-raf Oncogene," by Jason B. Bell, Christopher S. Hackett, Aron M. Geurts, Corey M. Carlson, Lara S. Collier, Geyi Liu, David A. Largaespada and Perry B. Hackett is presented.