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Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").