Unraveling the initial molecular events of respiration

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Respiration is a fundamental process of all living things, allowing them to produce energy, stay healthy, and survive. In cells, respiration involves what are known as “respiratory proteins,” e.g. hemoglobin in the blood and myoglobin in muscles.

Respiratory proteins work by binding and releasing small molecules like oxygen, carbon monoxide etc., called ligands. They do this through their “active center,” which in many respiratory proteins is a chemical structure called heme porphyrin.

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2008 International Science And Engineering Visualization Challenge

2008 International Science And Engineering Visualization Challenge 

 “Glass Forest”

The 2008 International Science and Engineering Visualization Challenge has just concluded with some pretty astonishing imagery in the winning slots. This picture, dubbed “Glass Forest,” is a scanning electron micrograph of diatoms (weird unicellular algae) clinging to a marine worm, and won the photography category: to my eyes it looks half like a palm tree and half like a Star Trek effect. The illustration category winner is even more amazing.

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‘Tired Blood’ Warning: Ignore It at Your Own Risk

‘Tired Blood’ Warning: Ignore It at Your Own Risk

Thanks to advertisements for the once-popular tonic Geritol, most people of a certain age know about “tired blood,” a disorder more accurately called anemia, involving a shortage of healthy red blood cells to carry oxygen to body tissues and cleanse them of carbon dioxide.

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