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Antega South Africa · Learning Videos

Time-lapse: how an embryo develops over five days in the laboratory

Time-lapse imaging of a cohort of embryos growing in culture from roughly 18 to 112 hours, filmed in a South African academic IVF laboratory.

University of Pretoria — Reproductive Biology Laboratory, Steve Biko Academic HospitalIVF TreatmentFertility TreatmentAll learning videos

This short film comes from the embryology laboratory at Steve Biko Academic Hospital. It shows what actually happens to embryos in the days between egg collection and embryo transfer — useful if you have been told your embryos are being grown to day 3 or day 5.

Filmed for teaching and research by the University of Pretoria. Laboratory methods and equipment differ between South African clinics, so ask your own embryology team how your embryos are cultured and graded.

Key takeaways

  • Embryos are grown in a controlled incubator for several days after egg collection.
  • Time-lapse imaging lets embryologists watch development without disturbing the culture conditions.
  • Not every fertilised egg continues to develop — attrition over the five days is normal.
  • Your clinic's embryologist can explain how your own embryos were graded.

Related Antega guides

Use these guides for general background, and check the South Africa organisations named on this page for local detail.

Continue learning

Fertility Show Africa Expert Talks (programme curated with IFAASA and SASREG)

Why can an IVF cycle be unsuccessful?

Dr Mohamed Cassim goes through the points in an IVF cycle where things can fall short — egg and sperm quality, fertilisation, embryo development, the lining of the womb and implantation.

Read the guide
Fertility Show Africa Expert Talks (programme curated with IFAASA and SASREG)

IVF add-ons: do you need them?

Dr Nicholas Clark reviews the extra treatments often offered alongside IVF and asks which of them a patient actually needs.

Read the guide

References

  • University of Pretoria — Reproductive Biology Laboratory — https://www.up.ac.za/obstetrics-and-gynaecology/reproductive-biology-laboratory

This video was produced by University of Pretoria — Reproductive Biology Laboratory, Steve Biko Academic Hospital and is shared for education only. It is not medical advice and does not replace guidance from your own doctor or fertility clinic. Naming an organisation does not imply a partnership with Antega.