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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.
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.
There are more sensory neurons in the tongue than in any other part of the body.