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. (Technical information on how the crystall- ography of vitamin C & the preparation of the specimen have produced the patterns in this image is available on request). Reference: MICROCOSMOS, Fig. 7.19, Ps. 136-137.

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達志影像

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