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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
The horizontal fraction bar was introduced by the Arabs.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.
![An inguinal hernia. A portion of the small intestine is protruding through the abdominal muscles int](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_09_47_84781326.jpeg)
![Traction is the application of a pulling force to maintain bone alignment during fracture healing. D](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_49_31_8986303.jpeg)