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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.