Also the leukemia inhibitory factor (LIF) is involved
in the proliferation, differentiation and survival of cells.
This cytokine is produced by the endometrium, it takes part
in implantation processes by preparing the uterine environment
for blastocyst implantation, and contributes to its
growth (Senturk and Arici, 1998; Halbersztadt et al., 2006;
Rodriguez et al., 2007).