The average adult has about 21 square feet of skin.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
Types of variation in chromosome number.
Examples of animals with external gills.
Three types of reversible inhibition
Types of Health Maintenance Organizations
Types of paralysis: (A) quadriplegia; (B) hemiplegia; (C) paraplegia.