A Medieval Surgery, Illustrated: The First Recorded Surgical Separation of Conjoined TwinsMain MenuIntroductionThe SourceAbout this SourceSupplementsAbout this EditionBibliographyCredits and AcknowledgementsAbout SourceLabKrista Zamora92e74893563e9dd0adc40dd5447478cf4e18eff8Caroline Da Rocha Birnfeld69f0eec2682a65875cfec2d26fd43a557607a39dAndrew Barrios1f64484d01321f5383e04e8bfb84b031edd76e2d
The folio itself is made from processed animal skin, most likely calf. This material is also called vellum.
