To cite this article: Zahra, H.S., Iqbal, A., Hassan, S.H., Shakir, H.A., Khan, M., Irfan, M., Ara, C. and Ali, S., 2019. Epigenetics: A bridge between artificial light at night and breast cancer. Punjab Univ. J. Zool., 34(2): 231-238. https://dx.doi.org/10.17582/journal.pujz/2019.34.2.231.238