[Scientific training and professional practice in the career of Carlos Chagas Filho].

The study dwells on the scientific background of Carlos Chagas Filho, between 1926 and 1942, which was the period of socialization of the scientist in the Faculdade de Medicina do Rio de Janeiro and the Instituto Oswaldo Cruz. It covers the period from the beginning of his professional career to the moment when he resigned from the administration of the Serviço de Estudos de Grandes Endemias in 1942 to devote himself to his academic career at the Laboratório de Física Biológica. The way in which his social and scientific resources were deployed throughout his career is analyzed, with a view to ascertaining the moment when he broke with the tradition of biomedical research of Manguinhos and embarked on the construction of a new location where he could implement his own scientific project.