title: Letter: Cytogenetic confirmation of failure of polar-body extrusion.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002869:Chromosome Aberrations; D003582:Cytogenetics; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D007621:Karyotyping; D008540:Meiosis; D051379:Mice; D008875:Middle Aged; D010063:Ovum / Q000166:cytology*