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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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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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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Multiple crossovers can include more than two chromatids Multiple crossovers can include more than two chromatids
Vertebral (spinal) column. Vertebral (spinal) column.
Common Prefixes of the Metric System Common Prefixes of the Metric System
Landsteiner's experiment demonstrating the exquisite specificity of the immune system. Landsteiner's experiment demonstrating the exquisite specificity of the immune system.
Male Reproductive System - Testes Male Reproductive System - Testes
fMRI and PET scan of the brain fMRI and PET scan of the brain
Video: Bone cells and tissues - tissue composition and cells

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