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The immune system is your body’s personal army of soldiers — when it comes across potentially harmful invaders like viruses and bacteria, it will flag those invaders for destruction. However, this defense system is not always perfect. In some cases, it may become overly active and attack healthy body cells,…

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A normal pregnancy usually lasts around 40 weeks, but births that occur before 37 weeks are defined as being premature. Premature births are associated with a wide range of problems in infant children, and generally, the shorter the term of a pregnancy, the greater the health problems there will be for the infant. In…

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  Genes are bundles of DNA that exist in your cells that affect how you look, grow, and age. Since the human genome was fully decoded in the 1990s, researchers have been working to figure out what all the genes do. Height is one example of a trait that has been investigated. Although height is an inherited trait,…