Get randomly lost, get home sooner

In a multicellular organism, gene expression regulation allows cells to live, divide and ensure their proper physiological role. The molecular nature of this process (e.g. low molecule number, Brownian movements..) involves random variations. Indeed, with the same genetic background, two neighbor cells do not express their genes in the same way. It is now settled that this level of stochasticity is involved in numerous biological processes (e.g. embryonic development). Recent studies have shown that during different differentiation processes, the level of stochastic gene expression (SGE) transiently increases.