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Showing posts from August, 2012

Dieting Monkeys Don't Live Longer?

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In the news: "Dieting Monkeys Don't Live Longer" by Sabrina Richards The Scientist August 29, 2012 3N1092 Mother barbary ape (Macaca sylvanus) and her young puzzle over a wrapper left by a tourist. Credit: Jeanne White / Photo Researchers, Inc.

Hanuted by Hantavirus in Yosemite

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In the news: "August 2012 - Yosemite National Park Outbreak Notice" from: Centers for Disease Control and Prevention August 29, 2012 BS4843 Color enhanced transmission electron micrograph (TEM) of a Hantavirus. Hantavirus is a respiratory disease carried in wild rodents such as deer mice. Mice do not appear ill while carrying the hantavirus. People become infected after breathing airborne particles of urine, droppings or saliva from infected rodents. Hantavirus causes flu-like symptoms that eventually cause the lungs to fill with fluid, making breathing difficult. Medical attention must be sought as soon as infection is detected. Most cases of Hantavirus reported in the U.S. have been in the rural Western states. Credit:Science Source
Colorization by: Mary Martin

Neil Armstrong (August 5, 1930 – August 25, 2012)

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In the news: "Made 'Giant Leap' as First Man to Step on Moon" By John Noble Wilford New York Times August 25, 2012 BH5869 The Apollo 11 crew leaves Kennedy Space Center's Manned Spacecraft Operations Building during the pre-launch countdown. Mission commander Neil Armstrong, command module pilot Michael Collins, and lunar module pilot Buzz Aldrin prepare to ride the special transport van to Launch Complex 39A where their spacecraft awaited them. Credit: NASA / Science Source

West Nile Outbreak Looms Large

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In the news: "Worst Year for West Nile Is Expected, Officials Say" by Donald G. McNeil, Jr.  New York Times August 22, 2012 AK436A Color enhanced Transmission Electron Micrograph (TEM) of West Nile Virus (togaviridae) isolated from brain tissue. Magnification = 120,000x. Credit: Chris Bjornberg / Photo Researchers, Inc.

Melanoma and Nutrition - Linked?

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In the news: "Evidence-Based Nutritional Chemoprevention of Melanoma" by Lowell Goldsmith SciLogs August 22, 2012 3W0059 Computer generated model of the chemical structure of Vitamin A. Vitamin A maintains skin and mucus membranes, and is needed for night vision. Its absence from diet leads to weight loss, night blindness, and to an increased susceptibility to infections. Vitamin A is structurally related to carotene. Carotene is converted into vitamin A in the liver, two molecules of vitamin A are formed from on molecule of beta carotene, hence good sources of carotene, such as green vegetables are good potential sources of vitamin A. Vitamin A is manufactured from fish-liver oil and by synthesis from beta-ionone. Good sources of Vitamin A are butter, milk, cheese, yogurt, sweet potatoes, carrots, red peppers, chilies, leafy green vegetables, tomatoes, apricots, and melons. Credit: Kenneth Eward / BioGrafx / Photo Researchers, Inc.

A Pox Upon your Chickenpox

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In the news: "Chickenpox Down 80 Percent since 2000" by Kate Yandell New York Times August 20, 2012 BV4951 Varicella-zoster virus (VZV) entering the bloodstream. VZV s a herpes virus that can cause chickenpox in children and shingles (Herpes zoster) in adults. The virus is transmitted by airborne viral particles shed from the skin of an infected person. The new host breathes in the virus, which enters the mucous membrane in a person's respiratory tract and begins to spread without its envelope from cell to cell. The virus invades T-cells of the blood and those T-cells carry the virus to the skin. There, the virus can recreate its envelope because the top layer of the skin lacks the endosomal pathway that removes glycoproteins from the envelope. Credit: Carol and Mike Werner / Photo Researchers, Inc.

Ironing out Iron Consumption

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In the news: "Iron Deficiency and Iron Overload" Jane E. Brody New York Times August 13, 2012 SB7859 Light micrograph of a section of human liver affected by hemosiderosis, a condition characterized by the excessive deposition of iron in the liver and caused by a high dietary intake or following repeated blood transfusions. Iron is stored as hemosiderin in the Kuppfer cells and hepatocytes (liver cells) and causes liver cell death and cirrhosis. Here, some cells contain large quantities of iron which has been stained black. Acomparable condition, hemochromatosis, results from an inherited defect in iron metabolism and affects other organs in addition to the liver. Magnification: x100 at 35mm size. Credit: Astrid & Hanns-Frieder Michler / Photo Researchers, Inc.

Triclosan, the Dirt on Antibacterial Soap

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In the news: "Triclosan, A Chemical Used in Antibacterial Soaps is Found to Impair Muscle Function" by Joseph Stromberg Smithsonian.com August 13, 2012 BQ7066 Triclosan is a potent wide-spectrum antibacterial and antifungal agent. It is used in soaps (0.10-1.00%), deodorants, toothpastes, shaving creams, mouth washes, and cleaning supplies. It may also be used in kitchen utensils, toys, bedding, socks, and trash bags. Triclosan reduces bacterial contamination on the hands and on treated products. Showering with 2% triclosan is a recommended procedure to decolonize patients whose skin carries methicillin-resistant Staphylococcus aureus (MRSA). At low concentrations, triclosan acts as a bacteriostatic; it targets bacteria mainly by inhibiting fatty acid synthesis. Key: Carbon: blue, Hydrogen: cream, Chlorine: yellow, Oxygen: green. Credit: Scimat / Photo Researchers, Inc.

Replaceable You

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In the news: "Replacement Parts" By Ed Yong TheScientist August 1, 2012 DA0975  Representation of different transplants: cornea, heart, cardiac valves, liver, pancreas, hand, intestines, bones, blood vessels, cells, kidney, lungs, skin. Credit: Dominique Duval / Photo Researchers, Inc.

TheScientist 2012 Labby Awards

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2012 LABBY AWARDSTheScientistVote for your favorite image here! (If you happen to prefer one of these images, no one at Photo Researchers would complain!)

MMR Protected From 'Babyjabs'

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In the news: "Website warned over MMR claims" BBC News Health August 7, 2012 SF2680 MMR vaccine being drawn into a syringe. This combined vaccine protects infants from three viral diseases: measles, mumps and rubella. The first injection is given in a child's second year, followed by a booster three years later. The vaccine consists of weakened samples of the three viruses. When injected, the vaccine stimulates the body's immune system to produce antibodies, but without causing infection. The immune system can then respond quickly against future infections by the viruses. In recent years, there has been public concern about a possible link between the MMR vaccine and autism. However, epidemiological studies suggest that there is no link. Credit: Tek Image / Photo Researchers, Inc.

Cardiac Catheterizations, For Profit

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In the news: "Hospital Chain Inquiry Cited Unnecessary Cardiac Work" by Reed Abelson and Julie Creswell New York Times August 6, 2012
BH6771 Inserting a catheter into an artery in the arm; from there it will be advanced into the right coronary artery. Credit: Michelle Del Guercio / Photo Researchers, Inc.

Mars Curiosity

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In the news: "NASA rover Curiosity makes historic Mars landing, beams back photos" By Steve Gorman Reuters August 6, 2012 BT6756 The NASA Mars rover Curiosity, launched on November 26, 2011, landed on Mars on August 6, 2012. Curiosity's main goal is to assess whether Mars is, or ever was, an environment able to support life. Credit: NASA / Science Source