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Did you know?

Your heart beats over 36 million times a year.

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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

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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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The average office desk has 400 times more bacteria on it than a toilet.

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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Micrographs of nerve cells taken with different types of light microscopes. Micrographs of nerve cells taken with different types of light microscopes.
Types of movement across a biological membrane. Types of movement across a biological membrane.
Examples of Scenarios Involving Nonmoral, Impersonal Moral, and Personal Moral Judgments from the St Examples of Scenarios Involving Nonmoral, Impersonal Moral, and Personal Moral Judgments from the St
Mental health Mental health
(A–B) Two types of canes. (A–B) Two types of canes.
Types of immunity. Types of immunity.
Video: The Krebs Cycle Animation

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