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More than 4.4billion prescriptions were dispensed within the United States in 2016.

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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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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

A blood smear. The smear reveals representative cells from each formed element group: red blood cell A blood smear. The smear reveals representative cells from each formed element group: red blood cell
Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
William Morris, Page from a specimen book with sample proof letters, Kelmscott Press. William Morris, Page from a specimen book with sample proof letters, Kelmscott Press.
Ancient Climate Change: Following the Cretaceous Ancient Climate Change: Following the Cretaceous
Married or partnered couples within a visible minority mixed group Married or partnered couples within a visible minority mixed group
Self-splicing of group I introns Self-splicing of group I introns
Video: HDL (high density lipoprotein)

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