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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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Examples of cell-to-cell communication based on the distance between cells
Nondisjunction during the formation of haploid cells.
Mouse with human liver cells
Whitefish blastula cells
RNAs are transported between cells in plants
Action of FMRP protein in normal and fragile-X cells