Miguel A Ramírez, Eva Pericuesta, Raul Fernandez-Gonzalez, Pedro Moreira, Belen Pintado and Alfonso Gutierrez-Adan*
* Corresponding author: Alfonso Gutierrez-Adan agutierr@inia.es
Reproductive Biology and Endocrinology 2006, 4:55 doi:10.1186/1477-7827-4-55