Left, methods of dividing the frenum of the tongue; right, breasts with breast cancer and a rectilinear cicatrix after the cure. Engraving with etching by R. Parr.

Licence: Public Domain Mark

Credit: Left, methods of dividing the frenum of the tongue; right, breasts with breast cancer and a rectilinear cicatrix after the cure. Engraving with etching by R. Parr. Wellcome Collection. Source: Wellcome Collection.