After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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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.
Wave Rock Formation
Respiratory Assistive Devices, Peak Flow Meter
Wave
Compression Wave in Traffic Flow
Voltmeter hook-ups for voltage-drop testing of a GM-type cranking circuit.
How to solve a half life problem involving exponential models (Question 2)