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25.4 MB (1.9 MB compressed)
3572 x 2488 pixels
30.2 x 21.1 cm ⏐ 11.9 x 8.3 in (300dpi)
DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Polarised light macrophotograph of cod liver oil capsules. It is obtained from the liver of fresh cod and represents a valuable source of vitamin A and D. These vitamins are also present in dairy produce and vitamin A in green vegetables and carrots. Vitamin D deficiency causes osteomalacia (bone softening) in adults while vitamin A deficiency produces defective vision in dim light and thickening and hardening of the skin.
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