Bull's Blood

Bull's Blood is a quest item in Pathologic. It is obtained during the Haruspex's Route on Day 6 as part of the main quest.

The Haruspex needs to bring an infected organ to the Ragi Barrow on the evening of Day 6 and give it to the Worms in order to obtain a vial of Bull's Blood. The vial is then given to the Bachelor to inspect.

Quote
"The blood of an infected sacrificial bull, cut open by impudent Worms at Ragi Barrow for some unknown purpose."