Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Mitral valve of a pig for human use, United States, 1976-197. Science Museum, London. Source: Wellcome Collection.

Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Mitral valve of a pig for human use, United States, 1976-197. Science Museum, London. Source: Wellcome Collection.
