Fig. 8
From: Boundaries potentiate polycomb response element-mediated silencing
Induction of PRE silencing in trans by boundary:boundary pairing. a Phenotypes of eyes of transgenic flies. Trans-heterozygotes were obtained by crossing the corresponding homozygote flies. All transgenes used for crosses were integrated at 96E. b III, IV, V, VI—hypothetical chromatin interactions formed in a-III, a-IV, a-V, a-VI, respectively