Dear Friends, we needing the following article: A Neofunctionalized X-Linked Ampliconic Gene Family Is Essential for Male Fertility and Equal Sex Ratio in Mice. Curr Biol. 2019 Nov 4;29(21):3699-3706.e5. doi: 10.1016/j.cub.2019.08.057. Epub 2019 Oct 17. PMID: 31630956. Thanks. Carlos Alberto Castañeda T. | Bibliotecólogo Asistente Universidad CES | Calle 10A # 22-04 | Medellín, Colombia Tel: (57) (4) 444 0555 Ext. 1132 | Fax: (57) (4) 266 6046 [log in to unmask]<mailto:[log in to unmask]> | www.ces.edu.co<http://www.ces.edu.co/> [http://www.ces.edu.co/correo/pie_correo.gif]