Several practical sessions of the module “Reduction and Refinement of the Design and Experimental Method”, from the "http://www.uab.es/servlet/Satellite/postgraduate/master-in-science-and-welfare-of-laboratory-animals/basic-details-1217916968009.html/param1-2264_en/param2-2012/" Master of Science and Welfare of Laboratory Animals will be taught in the experimental operating rooms of the "http://www.vhir.org/serveis/estabulari/presentacioserveis.asp?Idioma=en&mv1=3&mv2=3&mh1=3&mh2=3&mh3=1&mh4=0&ms=0" Animal Experimentation Service (SEA) from the Vall d’Hebron Institute of Research (VHIR).Veterinarians Marielle Esteves and Carla Fonseca will coordinate this collaboration and will give some lectures about image techniques in experimental animals, as well as practical sessions about ecoguided vascular access. Other professionals will participate on the sessions, Drs. Joan Sánchez de Toledo, César G. García Fontecha, Anna Server Salvà and Iván Villaverde Castillo, from the Vall d’Hebron Institute of Research (VHIR).The practical sessions will be taken in simulators and in big animals (pigs and sheep), with the objectives of showing the students some techniques of ecoguided vascular access, and start their training. The purpose of these kinds of techniques is to perfect (“refine”) the experimental handling of laboratory animals, which affects directly in animal welfare and the quality of the studies.The SEA includes a Big Animal Area and 3 operation rooms in its facilities, one for rabbits and two for pigs and sheep. They are provided with all the basic and specific equipment for a great variety of experimental procedures: inhalatory anesthesia equipment, monitoring, laparoscopy and endoscopy tower, fibroendoscopy and scopy arch or ultrasound scanner. The researchers and doctors of VHIR use the facilities to develop projects of translational research in the surgical field, and for training in general and specific techniques, highly sophisticated, such as endoscopic surgery or interventionist radiology.This specialization master is the only one in Spain where you can obtain the qualification of animal welfare consultant, required for animal facilities responsible, and also counts on the accreditation of the European Federation of Associations for the Laboratory Animal Sciences (FELASA). There are only two master degrees in Europe with this accreditation, being a great appeal for professionals in this field, also in an international level.Besides this master’s degree, the VHIR also teaches the module of Molecular Pathology from the "http://www.uab.cat/servlet/Satellite/studying/official-master-s-degrees/general-information-1096480962610.html?param1=1096480140580" Official Master's Degree in Biochemistry, Molecular Biology and Biomedicine from UAB, and next academic year (2014-2015) will teach the VIHR’s "http://www.vhir.org/master/eng/index.html" Master in Translational Biomedical Research.