2,458 results
2,458 results for: mutations
- Health & Medicine
HIV may date back to the 1930s
Genetic analysis of the AIDS virus suggests it first infected humans in the first third of the 20th century.
- Health & Medicine
One more reason to worry
A single dose of the AIDS drug nevirapine, given to mothers to help prevent them from infecting their children during birth, may be enough to prod the virus to develop drug resistance.
- Health & Medicine
HIV sexual spread exploits immune sentinels
The virus that causes AIDS latches onto a protein called DC-SIGN to hitch a ride on immune cells in mucus membranes and spread through the body.
- Agriculture
Apple pests stand up to antibiotics
Scientists are concerned about new forms of antibiotic resistance cropping up in fire blight—a deadly disease of apple trees.
- Tech
DNA embrace might drive micromachines
DNA interactions that bend tiny diving boards, or cantilevers, may open the door to powering micromachines by means of molecular reactions.
- Health & Medicine
Silencing the BRCA1 gene spells trouble
Some breast cancer patients without a mutation in the BRCA1 gene nevertheless have an incapacitated gene, silenced by a process called hypermethylation of nearby DNA.
- Health & Medicine
‘Bubble’ babies thrive on gene therapy
Gene therapy to repair mutations that thwart development of essential immune cells has helped three babies to overcome severe combined immunodeficiency, in which a child is born without a functional immune system.
- Plants
New gene-altering strategy tested on corn
Scientists have created herbicide-resistant corn with a new kind of genetic engineering that involves subtly altering one of the plant's own genes rather than adding a new gene.
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Disabled genes dull sense of smell
Mutated genes may explain why humans have a poor sense of smell.
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Bdelloids: No sex for over 40 million years
Researchers find the strongest evidence yet for creatures that have evolved asexually for millions of years.
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Popularity of germ fighter raises concern
The growing use of the antiseptic triclosan in products ranging from mouthwash to cutting boards and hunting clothes may create bacteria resistant to antibiotic drugs.
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Debate over Alzheimer’s enzyme flares up
Scientists continue to tussle over the identity of an enzyme implicated in Alzheimer's disease.
