Pellagra is a deficiency disease caused by a lack of nicotinic acid or its precursor tryptophan in the diet. It is characterized by dermatitis, diarrhoea, and mental disturbance, and is often linked to overdependence on corn as a staple food. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Clinical Photography |
Taille de l’image : | 3186 px × 2067 px |
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Property Release : | Non requis |
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