title: Sex-specific gene expression in preimplantation mouse embryos.
abstract: The 3.5-day-old blastocyst-stage mouse embryo consists of two tissues and contains approximately 60 cells. This tiny structure has now been observed to express nearly 600 genes in a sex-specific fashion, including at least one gene (Rhox/Pem) expressed only in females from their paternal X chromosome.
authors.affiliation: Developmental Biology Program, Sloan-Kettering Institute, New York, NY 10021, USA.
authors.forename: Guy S
authors.initials: GS
authors.lastname: Eakin
authors.forename: Anna-Katerina
authors.initials: AK
authors.lastname: Hadjantonakis
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000502:physiology*; D005260:Female; D005786:Gene Expression Regulation; D008297:Male; D051379:Mice; D005810:Multigene Family; D012727:Sex Characteristics