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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Sources of Energy in the United States Sources of Energy in the United States
The world attempted to deal with Somalia as if it were a real country but painfully learned that Som The world attempted to deal with Somalia as if it were a real country but painfully learned that Som
The United States under the Articles of Confederation, 1787 The United States under the Articles of Confederation, 1787
States and territories that have adopted their own version of HAZWOPER for all workers are shown in ... States and territories that have adopted their own version of HAZWOPER for all workers are shown in ...
Approximately 40 percent of farmers in the United States are 55 years old or older Approximately 40 percent of farmers in the United States are 55 years old or older
Zinc-finger nucleases and TALENs bind and cut DNA at specific sequences Zinc-finger nucleases and TALENs bind and cut DNA at specific sequences
Video: Chloroplast Structure & Light Dependent Reactions (Photosystem 1 and 2 Cyclic Electron Flow)

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