Embryology
Eggs with 1PN or 3PN are usually not used, because they are more likely to have an abnormal chromosome make-up. Clinic policies vary for some cases.
Also known as: 1PN, 3PN, polyspermy
Sources
Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.