The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
The energy input and output of glycolysis.
Signal Detection Theory
The averaging of an auditory evoked potential. Averaging increases the signal-to-noise ratio.
A signal transduction pathway mediated by Ras
From Signal Reception to Response
Translation at endoplasmic reticulum–bound ribosomes and the signal hypothesis