*************************NO UTILIZAR SIN CONSULTAR CON FOTOGRAFÍA*****************Close up of a screen which shows an injection oto d’un écran montrant une micro-injection de embryo stem cells in a muse embryo to set a genetically modified line, on February 9, 2012, at the Centre d’Immunologie de Marseille-Luminy (CIML), in the transgenesis laboratory which in charge to create animals in order to understand how genes work, in Marseille, southern France. AFP PHOTO / ANNE-CHRISTINE POUJOULAT