Zoi Fertility - Sequential Embryo Transfer

All embryos communicate with the parent uterus using various hormones called cytokines.

Cytokines helps the uterus to prepare for implantation.
Embryos chemically tells the uterus what it needs for development and implantation.
Embryo transfer on Day 3 aids the implantation of a second sequential transfer of blastocysts on day 5. This increases chances of possible pregnancy, since uterus was prepared by first embryos for second set of embryos.