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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int
Deep venous thrombosis. Deep venous thrombosis.
The features found in a long bone. The features found in a long bone.
Deep vibration applied with fingertips to the abdomen. Deep vibration applied with fingertips to the abdomen.
Lift sides of waist with deep effleurage strokes from the side. Move to opposite side and reach over ... Lift sides of waist with deep effleurage strokes from the side. Move to opposite side and reach over ...
A piece of broken plate was dug up in an archeological site. It was put on top of the grid ... A piece of broken plate was dug up in an archeological site. It was put on top of the grid ...
Video: Introduction to Spirometry

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