Supplement to: Bitton, Danny A; Grallert, Agnes; Scutt, Paul J; Yates, Tim; Yaoyong, Li; Bradford, James R; Hey, Yvonne; Pepper, Stuart D; Hagan, Iain M; Miller, Crispin J (2011): Programmed fluctuations in sense/antisense transcript ratios drive sexual differentiation in S. pombe. Molecular Systems Biology, 7, https://doi.org/10.1038/msb.2011.90