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Evolution of taste receptor may have shaped human sensitivity to toxic compounds

Researchers have found new evidence suggesting that the ability to taste bitter compounds has been strongly advantageous in human evolution. Animals rely on chemical perception, including the senses of taste and smell, for protection against the harmful compounds found in nature. It is widely believed that behavioral and dietary choices may have reduced the importance of such chemical perc...

MicroRNAs have shaped the evolution of the majority of mammalian genes

RNA continues to shed its reputation as DNA's faithful sidekick. Now, researchers in the lab of Whitehead Institute Member David Bartel have found that a class of small RNAs called microRNAs influence the evolution of genes far more widely than previous research had indicated. "MicroRNAs are affecting the majority of protein-coding genes, either at a functional level or an evolutionary lev...

What's shaped like a pear and has 2 genomes? Check the pond

If you could peer microscopically into the closest freshwater pond, you'd hesitate before dipping a toe. Amid the murky water, you'd probably notice an oddly furry, pear-shaped organism gliding along--and gobbling up everything in its path. --and a big fan club among scientists, as a star organism for research into how cell...

Why is the heart heart-shaped?

How does the heart attain its characteristic shape? Shape may be sculpted by cell movement, cell division, or changes in cell size and shape, all of which can be influenced by the local environment. The heart appears as a simple tube early in development; later, the tube walls bulge outward to form the cardiac chambers. In a new study published online in the open access journal PLoS Biol...
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Soft Contacts Designed for Cone-Shaped Cornea

Custom-designed contacts improved vision for subjects with keratoconic eyes and offer hope of nonsurgical treatment instead of corneal transplants . University of Rochester researchers describe the custom design techniques and results of visual acuity tests in a paper published in April in Optics Letters. Keratoconic eyes are rare but disabling. From the side, the eyes look more poi...
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Sugita Aneurysm Clip L-Shaped (S)

Description:Extremely wide blade opening. Excellent bio and MRI compatibility. Lot number on each clip. Long reliable history. Large type 1/1 (mm), opening width 8.0 mm and length 5 mm....
Company:Mizuho America, Inc.

Sugita Aneurysm Clip L-Shaped (M)

Description:Extremely wide blade opening. Excellent bio and MRI compatibility. Lot number on each clip. Long reliable history. Large type 1/1 (mm), opening width 8.0 mm and length 7.5 mm....
Company:Mizuho America, Inc.

Sugita Aneurysm Clip L-Shaped w/cvd. (S)

Description:Extremely wide blade opening. Excellent bio and MRI compatibility. Lot number on each clip. Long reliable history. Large type 1/1 (mm), opening width 6.0 mm and length 10 mm....
Company:Mizuho America, Inc.

Sugita Aneurysm Clip L-Shaped w/cvd. (L)

Description:Extremely wide blade opening. Excellent bio and MRI compatibility. Lot number on each clip. Long reliable history. Large type 1/1 (mm), opening width 6.0 mm and length 7.5 mm....
Company:Mizuho America, Inc.

Sugita Aneurysm Clip L-Shaped

Description:Extremely wide blade opening. Excellent bio and MRI compatibility. Lot number on each clip. Long reliable history. Large type 1/1 (mm), opening width 8.0 mm and length 10 mm....
Company:Mizuho America, Inc.

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shaped at Medicine Technology
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Breaking Medicine News(10 mins):Health News:National Family Partnership Designates October 27th 'Lock Your Meds' Day 2Health News:National Family Partnership Designates October 27th 'Lock Your Meds' Day 3Health News:Los Angeles Psychologist to Help CDC Fight Child Abuse 2Health News:HealthTalker Founder and CEO Andrew Levitt to be Featured at 'Health 2.0: User-Generated Healthcare 2008' 2
(Date:10/15/2008)...fty-nine leading life scientists from Europe and a...ean Molecular Biology Organization (EMBO) for thei...researchers, distinguished as EMBO Members, are fr...equally respected scientists come from other parts...ing the current membership total to 1360. , Memb...
(Date:10/15/2008)...species remain separate are crucial questions in e...een different animal species are often infertile o... cannot reproduce. A sheep-goat hybrid, the result... stillborn. Such hybrids can also be dysfunctional...mixture of sounds from both parent species. , Re...
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Breaking Biology News(10 mins):EMBO honors 59 leading life scientists 2Turtle doves commit adultery 2Turtle doves commit adultery 3Modern genetics vs. ancient frog-killing fungus 2Modern genetics vs. ancient frog-killing fungus 3Penn State receives new NASA astrobiology grant 2Penn State receives new NASA astrobiology grant 3ESBATechs Antibody Fragments Demonstrate Penetration into the Eye with Topical Delivery via Eye Drops 3464 1ESBATechs Antibody Fragments Demonstrate Penetration into the Eye with Topical Delivery via Eye Drops 3464 2ESBATechs Antibody Fragments Demonstrate Penetration into the Eye with Topical Delivery via Eye Drops 3464 3Public Health Experts Argue for Integrated Services to Avert 7 Million HIV Infections by 2010 12549 1Public Health Experts Argue for Integrated Services to Avert 7 Million HIV Infections by 2010 12549 2Americas 50 best hospitals 2008 released by HealthGrades 12545 1Americas 50 best hospitals 2008 released by HealthGrades 12545 2Americas 50 best hospitals 2008 released by HealthGrades 12545 3Butterfly fish may face extinction 2302 1Butterfly fish may face extinction 2302 2Butterfly fish may face extinction 2302 3
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