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Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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Macaroni and cheese provides a double source of riboflavin from the pasta and the cheese Macaroni and cheese provides a double source of riboflavin from the pasta and the cheese
A double crossover is undetected A double crossover is undetected
Rosalind Franklin’s Photo 51, revealing DNA to be a double helix Rosalind Franklin’s Photo 51, revealing DNA to be a double helix
Analysis of double-mutant phenotypes to find order of genes in developmental pathways Analysis of double-mutant phenotypes to find order of genes in developmental pathways
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

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