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Effect of UVA light in vivo on the intensity of the cis C=C (A) and OH (B) stretching bands for lipid of the guinea pig lens. The animals (initially 18 months old) were exposed to UVA (solid bars) light for five months. Values were ratioed to the CH symmetric stretching-band intensity to quantitate the amount of oxidation relative to the amount of lipid. Results are expressed as means ±SEM with n = 23–28 for aged-matched controls (open bars) and n = 8–10 for experimental.
