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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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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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