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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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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
Local/long distance cell Signaling
Cell Structure
Cell Wall
Cell-Cell junctions/Attachments
T cells bound to fluorescence-tagged antibodies to two cell-surface proteins are
(a) The distribution of sickle cell anemia in the Old World. (b) The distribution of malaria overlap