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Vaccines prevent between 2.5 and 4 million deaths every year.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

An ecological puzzle: the cicada, Diceroprocta apache, is active when air temperatures would appear An ecological puzzle: the cicada, Diceroprocta apache, is active when air temperatures would appear
Sunlight consists of a spectrum of colors, visible here in a rainbow. Sunlight consists of a spectrum of colors, visible here in a rainbow.
MYSQL Top MYSQL Top
A typical malfunction indicator lamp (MIL) often labeled “check engine.” A typical malfunction indicator lamp (MIL) often labeled “check engine.”
A polysome consists of an mRNA molecule loaded with many ribosomes, all engaged in translation. A polysome consists of an mRNA molecule loaded with many ribosomes, all engaged in translation.
The eukaryotic cell cycle consists of two parts: (1) interphase and (2) mitosis followed by cytokine The eukaryotic cell cycle consists of two parts: (1) interphase and (2) mitosis followed by cytokine
Video: Biological organic compounds

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