A close-up of a cow pock mark.
Licence: Public Domain Mark
Credit: A close-up of a cow pock mark. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0040230/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: A close-up of a cow pock mark. Wellcome Collection. Source: Wellcome Collection.