DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
Polarised light micrograph of crystals of vitamin C (ascorbic acid). Vitamin C is present in fruits, rose hips & green vegetables. A deficiency of the vitamin in the diet may cause scurvy, symptoms of which include anaemia, haemorrhaging into the skin & gums, bruising, & bone pains. Magnification: x20 at 35 mm size, x40 at 6x7cm size. C & the preparation of the specimen have produced the patterns in this image is available on request). Reference: MICROCOSMOS, Fig. Ps.
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