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Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Sequential decline of whale catches in the Antarctic shows the strong effect of human predators. Sequential decline of whale catches in the Antarctic shows the strong effect of human predators.
Stem Cell Research Could Expand Clinical Use of Regenerative Human Cells Stem Cell Research Could Expand Clinical Use of Regenerative Human Cells
Cross Section of the Human Brain Cross Section of the Human Brain
Average Number of Hours Slept per Day by Various Mammalian Species Average Number of Hours Slept per Day by Various Mammalian Species
A BLAST alignment between human myoglobin and human a-globin showing a 25% sequence identity A BLAST alignment between human myoglobin and human a-globin showing a 25% sequence identity
Structure and function of human teeth. Structure and function of human teeth.
Video: A timeline of the teeth (Explained - No Audio)

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