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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

The enhancement effect observed by Emerson. The enhancement effect observed by Emerson.
History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar
Creating Easy-to-Read Instruction Creating Easy-to-Read Instruction
The areas in which reading-associated increases in activity were observed in the fMRI study of ... The areas in which reading-associated increases in activity were observed in the fMRI study of ...
Observed change in surface temperature from 1901 to 2012 Observed change in surface temperature from 1901 to 2012
Easy way to remember to formula to calculate volume of a cylinder Easy way to remember to formula to calculate volume of a cylinder
Video: How Hemoglobin Picks Up and Delivers Oxygen

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