This exhibition was the result of an initiative undertaken by the National Center for Oncological Research (C.N.I. O.) and its director Dra. María Blasco. It was for the first time that such dialogue took place and the scientist chosen was the pioneer in molecular biology in Spain, Margarita Salas, a disciple of the Nobel Prize winner Severo Ochoa. The result of this dialogue was 51 + 1 drawings (I gave one of the drawings to Marguerita Sala as a gift) and a short video.