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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
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Your heart beats over 36 million times a year.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.
Photograph of a brain specimen with a large malignant tumor.
Illustration showing how the primary breast tumor metastasized through the lymphatic and blood vesse
Nephroblastoma. A sectioned kidney reveals the presence of a very large tumor, which arose from feta
Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo
Lung cancer. Photograph of part of a lung removed after death. The yellow area is a large tumor and
(a) Acute myelocytic leukemia: The tumor cells are of myeloid rather than lymphoid lineage. (b) ...