Dead Tissue

Dead Tissue is a quest item in Pathologic, although it is superfluous. It is only obtainable in the Haruspex's Route.

On Day 4, the Haruspex can find this in Rubin's Prosectorium. The Haruspex may give it to the Bachelor to examine, but it is not required to progress the day's quest.

Quote
"This is blood and tissue of a person who died of the Sand Plague. Procuring this sample took a lot of work. Illegal dissection of dead bodies may result in an accusation of sacrilege, leading to exile at best and more commonly to lynching."