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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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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 human body produces and destroys 15 million blood cells every second.

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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Changes in bronchioles during an asthma attack: (A) normal bronchiole and (B) in asthma attack. Changes in bronchioles during an asthma attack: (A) normal bronchiole and (B) in asthma attack.
The relative proportions of body region representation in the motor cortex (anterior to the central The relative proportions of body region representation in the motor cortex (anterior to the central
The Reticular Activating System and Related Regions in the Brain Are Important Areas of Focus for D The Reticular Activating System and Related Regions in the Brain Are Important Areas of Focus for D
Disorders and Diseases of the Endocrine System Cont Disorders and Diseases of the Endocrine System Cont
Endocrine System Endocrine System
Infections in the Digestive System Infections in the Digestive System
Video: Sickle Cell Anemia

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