Dodrill-GMR mechanical heart being used during a cardiac operation.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Dodrill-GMR mechanical heart being used during a cardiac operation. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0004155/full/800%2C/0/default.jpg)
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Dodrill-GMR mechanical heart being used during a cardiac operation. Wellcome Collection. Source: Wellcome Collection.