Polarised light micrograph of crystals of vitamin C (ascorbic acid). Vitamin C has a monoclinic crystal structure,characterised by three unequal axes,one pair of which are not at right angles. Most fruit and vegetables are high in vitamin C content. The average man or woman requires 70 milligrams per day; children and pregnant woman need an additional amount. A deficiency in vitamin C causes scurvy. The biochemical function of vitamin C is as a regulator in tissue respiration. Magnification: x80 at 6x4.5 cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Michler, Astrid & Hans-Frieder |
Taille de l’image : | 2668 px × 3543 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |