title: Multinuclear spermatozoa associated with polyploidy.
abstract: We are reporting on a possible association between multinucleated spermatozoa and polyploidy after in vitro fertilization. The semen from the male partner of a couple with 40% polyploidy on three in vitro fertilization attempts was examined by light and transmission electron microscopy. In that sample 10% to 12% of spermatozoa demonstrated conjoined or double heads. The significance of these findings is discussed.
authors.affiliation: Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT 06510.
authors.forename: F R
authors.initials: FR
authors.lastname: Parikh
authors.forename: M J
authors.initials: MJ
authors.lastname: Iannielo
authors.forename: M
authors.initials: M
authors.lastname: Kashgarian
authors.forename: A H
authors.initials: AH
authors.lastname: DeCherney
authors.forename: G
authors.initials: G
authors.lastname: Lavy
mesh_terms: D000328:Adult; D002467:Cell Nucleus / Q000648:ultrastructure*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D011123:Polyploidy; D013094:Spermatozoa / Q000648:ultrastructure*