Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
An image of a streptococcus bacteria taken by a scanning electron microscope.
Collapse of State Trooper Cave’s Roof
(b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ...
Clostridium difficile: (a) on blood agar and (b) scanning electron microscopy.