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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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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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A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

The internal organization of cells, tissues, organs, and organ systems in a mammal. The internal organization of cells, tissues, organs, and organ systems in a mammal.
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Example of Index entry for an anatomic site with a cross-reference. Example of Index entry for an anatomic site with a cross-reference.
Internal and External Loci of Control Internal and External Loci of Control
Difference between Functional and Cross-Functional team Difference between Functional and Cross-Functional team
Internal Anatomy of the Stomach Internal Anatomy of the Stomach
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