When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
Joseph Banks
Joseph Banks
Basic principle of target-probe hybridization in microarray chips.
Pituitary Hormones and Their Target Cells, Tissues, and Organs
Squaring a binomial — a geometric easy way to remember