Embryo
embryologyDefinition
The developing organism from fertilization through the eighth week of gestation. In IVF, the term covers the period from fertilization through blastocyst stage before transfer.
In IVF Treatment
After fertilization, embryos are cultured in the lab for 3-6 days. The embryologist grades embryos based on their development, and your care team recommends which embryo or embryos to transfer based on the full clinical picture.