Tissue analysis comes from either surgical biopsies or post mortem autopsies. To prepare for her role, Toussaint visited the morgue and viewed a few autopsies. No proper autopsies or DNA tests were done. Two official autopsies were conducted in 1878. Human skin often may come from autopsies or plastic surgeries. It was there that the autopsies were performed. There are films regarding autopsies as well as graphic photographs of crime victims. Afterwards he researched the effects of these substances by performing autopsies on dead bodies. Eleanor Bonneville assists Logan Nelson in performing autopsies of crime victims for the police department. Broca published his findings from the autopsies of twelve patients in 1865. Guyanese authorities waived their requirement for autopsies in the case of unnatural death. He based his findings on more than 900 autopsies. The inquiry concerned 26 charges related to autopsies in four other cases. Histopathology can diagnose heart failure in autopsies. Afterward, the mortician autopsies Marta, cleans up and leaves.