1. Alberts, B., Johnson, A., Lewis, J., Morgan, D. & Raff, M. Molecular Biology of the Cell, Taylor & Francis (2014).
2. Waddington, C. H. Torwards a Theoretical Biology. Nature 218(11), 639–640 (1968).
3. Waddington, C. H. Canalization of Development and the Inheritance of Acquired Characters. Nature 150(3811), 563–565 (1942).
4. Turner, B. M. Cellular memory and the histone code. Cell 111(3), 285–291 (2002).
5. Henikoff, S. & Greally, J. M. Epigenetics, cellular memory and gene regulation. Curr. Biol. 26(14), R644–R648 (2016).