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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Extinction and immigration of bird species on the California Channel Islands between 1917 and 1968 ( Extinction and immigration of bird species on the California Channel Islands between 1917 and 1968 (
Protoneuridae is a family of damselflies. Most species are commonly known as threadtails, while othe Protoneuridae is a family of damselflies. Most species are commonly known as threadtails, while othe
Thorax Posterior view of human body Thorax Posterior view of human body
Anatomical directions in a human. Notice that the directions in the cerebral hemispheres are rotated ... Anatomical directions in a human. Notice that the directions in the cerebral hemispheres are rotated ...
The major human endocrine glands and their central nervous system control centers The major human endocrine glands and their central nervous system control centers
Typical characteristics of r-selected and k-selected species Typical characteristics of r-selected and k-selected species
Video: Neural regulation of mechanical digestion- CNS voluntary, ANS & ENS controlled involuntary movements

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