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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.