SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Not for use in Television.
Pigmentation due to vitamin B12 deficiency. Pigmentation on the knuckles of a man with a deficiency of vitamin B12 (cobaltamine). Vitamins are trace nutrients that form an essential part of the diet. Vitamin B12 is used in digestion and metabolism. Photographed in India.
Model release not required. Property release not required.