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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
![The mandrill (Mandrillus sphinx) is a primate of the Old World monkey (Cercopithecidae) family,[3] c](https://biology-forums.com/gallery/47/medium_12359_08_06_12_5_05_05.jpeg)
