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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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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Electronmicrograph showing a blood clot composed of fibrin, red blood cells, and tissue debris. Electronmicrograph showing a blood clot composed of fibrin, red blood cells, and tissue debris.
Searchable Scientific Literature Databases and Sources Searchable Scientific Literature Databases and Sources
Table Salt Is Composed of Sodium and Chloride Table Salt Is Composed of Sodium and Chloride
Genes are composed of a sequence of nucleotides in a DNA molecule Genes are composed of a sequence of nucleotides in a DNA molecule
The central nervous system is composed of the brain and the spinal cord The central nervous system is composed of the brain and the spinal cord
Newborns, infants, and children have a high percentage of body weight composed of water... Newborns, infants, and children have a high percentage of body weight composed of water...
Video: Type of Cell Junctions - Desmosome, Hemidesmosomes and Gap Junctions

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