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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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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.

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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Amino acid sequence of bovine insulin Amino acid sequence of bovine insulin
Nucleic acids. Nucleic acids.
Nucleic acids: Complementary base pairing Nucleic acids: Complementary base pairing
Pathway for synthesis of polyunsaturated fatty acids (PUFAs) in plants and animals Pathway for synthesis of polyunsaturated fatty acids (PUFAs) in plants and animals
Pi molecular orbital system of PLP-amino acid Schiff base Pi molecular orbital system of PLP-amino acid Schiff base
Commercially made peanut butter doesn’t have any detectable levels of trans fatty acids Commercially made peanut butter doesn’t have any detectable levels of trans fatty acids
Video: Interview with an Anorexic Woman (Part 1 of 2)

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