Abstract
This article recapitulates the discoveries and anti-tumoural therapeutical proposals by Francesco Sanfelice, who in 1931 published an essay entitled The Treatment of Cancer and Sarcoma with Cancrocidin (paraneoforming Blastomycetes). Sanfelice's discoveries are contextualised with subsequent scientific discoveries, especially with those by L. Scott McDaniel and G. Cozad, who evaluated the functionality of murine peritoneal macrophages previously sensitised precisely with Blastomyces dermatitidis antigen extracts. Finally, recent research on the topic of intratumoural microbiota is mentioned showing how Sanfelice's ideas, albeit partly outdated, can still inspire current biomolecular research.