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Blood is approximately twice as thick as water because of the cells and other components found in it.
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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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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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People about to have surgery must tell their health care providers about all supplements they take.
![(a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu](https://biology-forums.com/gallery/47/medium_33_08_09_11_10_42_11_1675758.jpeg)
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