The infectivity of a virus is determined by its ability to avoid the whole machinery of the host cell defense presented. Vaccinia virus (orthopoxvirus family of which belongs to the virus which causes smallpox) exhibits a surprising: it is able to induce motility of cells infected, as evidenced by work done in the Motility Laboratory Cellular Cancer Research in London. The first author of an article published in Science, Ferran Valderrama, is a Spanish left the ranks of the Institute of Biomedical Research August Pi I Sunyer, University of Barcelona and is currently studying in the English capital, the cellular mechanisms involved in cancer . (more...)