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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Cystostomy. An artificial opening is made through the urinary bladder wall during this procedure. As Cystostomy. An artificial opening is made through the urinary bladder wall during this procedure. As
A form letter is used when the same letter is sent to multiple recipients. A form letter is used when the same letter is sent to multiple recipients.
The Mulleta family of Ethiopia, described in the opening vignette. The Mulleta family of Ethiopia, described in the opening vignette.
The upper intake manifold, often called a plenum, attaches to the lower intake manifold. The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
The illusory bands visible in this figure are often called Mach bands, although Mach used a ... The illusory bands visible in this figure are often called Mach bands, although Mach used a ...
A square matrix P is called a permutation matrix if each row and column of P contains exactly ... A square matrix P is called a permutation matrix if each row and column of P contains exactly ...
Video: Normal and abnormal blood pH

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