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Did you know?

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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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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The horizontal fraction bar was introduced by the Arabs.

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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

L. Frank Baum, author of The Wonderful Wizard of Oz (1900) and a fan of William Jennings Bryan, perh L. Frank Baum, author of The Wonderful Wizard of Oz (1900) and a fan of William Jennings Bryan, perh
Poster for the Cinématographe, with the Lumière Brothers film L'Arroseur Arrosé Poster for the Cinématographe, with the Lumière Brothers film L'Arroseur Arrosé
Wedge-shaped oil film developed below a moving block. Wedge-shaped oil film developed below a moving block.
Wedge-shaped oil film curved around a bearing journal. Wedge-shaped oil film curved around a bearing journal.
Mammograms. (A) Mammogram procedure. (B) Film of normal breast. (C) Film of breast with tumor. Mammograms. (A) Mammogram procedure. (B) Film of normal breast. (C) Film of breast with tumor.
Gender Representation in Children’s Film Gender Representation in Children’s Film
Video: Amniocentesis and CVS Animation

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