The average adult has about 21 square feet of skin.
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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Structure of cellulose, the main macromolecule of the primary cell wall
A hypothetical model of the process of cell-wall expansion.
SICKLE SHAPE
Locations of major metabolic pathways within a eukaryotic cell
VIEW OF A MONK'S CELL IN THE MONASTERY OF SAN MARCO, FLORENCE