title: Live birth from a zygote cryopreserved for 8 years.
abstract: After a cryopreservation period of 8 years, four zygotes were thawed and transferred to the patient's uterine cavity. A singleton pregnancy resulted in the delivery of a normal male. This case report offers evidence that long terms of cryopreservation are consistent with full developmental potential post-thaw, and encourages further examination of imposing limits on length of storage of frozen concepti.
authors.affiliation: Pennsylvania Reproductive Associates, Pennsylvania Hospital, Department of Obstetrics and Gynecology, Philadelphia 19107, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Go
authors.forename: S L
authors.initials: SL
authors.lastname: Corson
authors.forename: F R
authors.initials: FR
authors.lastname: Batzer
authors.forename: J L
authors.initials: JL
authors.lastname: Walters
mesh_terms: D000328:Adult; D015925:Cryopreservation; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007231:Infant, Newborn; D007247:Infertility, Female / Q000628:therapy; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D011256:Pregnancy Outcome; D013997:Time Factors; D015053:Zygote