Resnick, Irven M. "Cruentation, Medieval Anti-Jewish Polemic, and Ritual Murder." Antisemitism Studies 3, no. 1 (2019): 95-131.
In his Bonum universale de apibus (On Bees), the Dominican Thomas of Cantimpré recorded several instances in which the corpse of a murder victim spontaneously effused blood in the presence of the murderer. In one of these stories, Thomas provided an account of a ritual murder (ca. 1260). In this article, I examine the relationship between this phenomenon of "cruentation" and the anti-Jewish exemplum. I also identify some of the distinctive features of the tale, including the claim that the Jews typically harvest the blood of their Christian victims in order to address certain defects in their own nature. Finally, I examine the unusual identification of the Christian victim as female in relation to another ritual murder account at Valreás in 1247.