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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
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Everyone has one nostril that is larger than the other.