Tongue diagnosis chart: Red tongue with pale black centre
Licence: In copyright
Credit: Tongue diagnosis chart: Red tongue with pale black centre. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0038683/full/800%2C/0/default.jpg)
Licence: In copyright
Credit: Tongue diagnosis chart: Red tongue with pale black centre. Wellcome Collection. Source: Wellcome Collection.