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Experimental schedule of vitamin C (Vit. C) and lead administration and of retrieving lead from urine and feces. To measure the excretion of lead through urine and feces, urine and feces were collected on alternate days (the day before, 2nd day, 4th day, 6th day, and 8th day). To see the effect of Vit. C on suppressing intestinal absorption of lead, Vit. C was started to administrate a day before lead administration.
