Vitamin C crystals. Polarized light micrograph of crystals of vitamin C (ascorbic acid). Vitamin C is obtained from fresh fruit, especially the citrus fruits such as lemons and oranges. It is required to maintain healthy connective tissue and heal wounds. As an antioxidant, it may protect against viruses and cancer-causing substances. Field of view size: 0.74 x 1.11 millimetres.
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