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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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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

A Motor Protein Moves Microtubules in Cilia and Flagella A Motor Protein Moves Microtubules in Cilia and Flagella
B, The nurse teaches the postoperative client to use an incentive spirometer to expand the lungs. B, The nurse teaches the postoperative client to use an incentive spirometer to expand the lungs.
Smoker's Lungs Smoker's Lungs
Lungs Lungs
In this cartoon, Boss Tweed welcomes cholera—a skeletal figure of death carrying a handbag from “Asi In this cartoon, Boss Tweed welcomes cholera—a skeletal figure of death carrying a handbag from “Asi
Lungs Lungs
Video: The life cycle of protein

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