Cyanide works by making the human body unable to use oxygen.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Ground cover and colour such as shown here in (a) white sand
Colorectal cancer. The most common sites of tumor development are shown.
Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into
The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag
Structures of (a) free and (b) DNA-bound forms of BamHI, with DNA shown end-on, in orange