Thank you very much for all the advices! Mercè Martí Gaudes Cap de Servei Histology and Bioimaging Centre de Medicina Regenerativa de Barcelona (CMR[B]) Dr. Aiguader, 88 7ena planta 08003 Barcelona mmarti <@t> cmrb.eu <mailto:mmarti <@t> cmrbarcelona.org> Tel: +34 93 316 03 51 Fax: +34 93 224 10 83