Eduard Pernkopf: The Nazi book of anatomy still used by surgeons - BBC News
Eduard Pernkopf created an "atlas" of anatomy by dissecting the bodies of Nazi political prisoners.
Thanks to the complex hand-drawn illustrations - showing the human body peeled back layer by layer - Dr Mackinnon, from Washington University in St Louis, was able to complete the procedure.
The book she had used, the innocuous-sounding Pernkopf Topographic Anatomy of Man, is widely considered to be the best example of anatomical drawings in the world. It is richer in detail and more vivid in colour than any other.
Skin, muscle, tendons, nerves, organs and bone are revealed in graphic detail. It's not for the faint-hearted.
But the book, often referred to as Pernkopf's Atlas, is no longer in print and a second-hand set - there are several volumes - can sell for thousands of pounds online.
Yet despite its hefty asking price, few would proudly display it in their clinic, library or home.
That's because the book's findings came from the bodies of hundreds of people killed by the Nazis. It is their bodies - cut up and dissected - that are shown across thousands of pages.
Critics say the book is tainted by its dark past and scientists have grappled with the ethics involved in its use.
Dr Mackinnon says she feels uncomfortable with its origin, but using the book is a crucial part of being an "ethical surgeon" - and that she could not do her job without it.
Rabbi Joseph Polak - a Holocaust survivor and professor of health law - believes the book is a "moral enigma" because it is derived from "real evil, but can be used in the service of good".