Merck developed a drug that worked against nausea caused by chemotherapy, but it flopped as an antidepressant in humans.
While the ozone layer in the upper atmosphere plays an important role in limiting harmful ultraviolet light reaching the Earth's surface, low-level ozone is a pollutant that is harmful, causing respiratory problems in animals as well as well-documented cases in humans.
One pertinent observation is that dolphins, whales and their kind have brains as anatomically complex as those of humans, and that these brains contain a particular type of nerve cell, known as a spindle cell, that in humans is associated with higher cognitive functions such as abstract reasoning.
But MSM's effectiveness and safety as a pain reliever in humans haven't been scientifically determined.
Early tests suggest 2-heptanone may also find a role in humans as a local anaesthetic.
The new study gives us some of the first clues in humans as to why this may be.
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When finished, these machines will be used for defence purposes, as well as helping out humans in tricky situations.
The procedure has been hailed as the first step in humans of efforts to be able to restore sight in blind people.
Current ultraviolet light laser treatments can kill micro-organisms - but cannot be used in humans as they would also damage cells in the body.
Antimicrobial experts from the UK say that it is too early to say whether the technique will work in humans as well as it does in animals.
The results were so successful that Rubenstein will apply for approval from the Food and Drug Administration to start a trial that will allow him to implant the first devices in humans as early as this fall.
They believe that the use of animals in experiments and the slaughtering of animals as food for humans are all right as long as these activities are conducted in a humane way.
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The central ethical tension in all research involving humans, in America as elsewhere, is a conflict between the best interests of the subject and the gain in knowledge that will benefit later generations.
Current applications for Superbot are being developed with space exploration in mind, but Shen said the technology could be usefully applied in any environment dangerous to humans such as for search and rescue tasks in mines or underwater -- although the laboratory is still working on a morphing robot capable of swimming.
An example might be Vermont: it has few natural advantages as a habitat for humans in winter.
Mr. Isacoff says technologies of this type could one day treat blinding diseases in humans such as retinitis pigmentosa.
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The synthetic collagen appears to be just like the collagen found in humans, as an initial test indicated that an enzyme that breaks down collagen in the body also breaks down the synthetic collagen.
He said the findings did not give a definitive answer as to how speech arose in humans, but they did at least show that a combination of "lip-smacking" and vocalisations could have been a viable step for speech evolution.
Though a great enthusiast for all things crocodile-related - he once seriously considered the logistics of keeping one in his home as a pet - Packham says humans always need to be on their guard when in the vicinity of such animals.
Precious metals, fabrics, weaponry and horses were all traded here, as well as humans -- Dyflin had the biggest slave market in Europe following the fall of the Roman Empire.
Ongoing research includes the development of socially intelligent robot partners that interact with humans in human-centric terms, work with humans as peers, and learn from people as an apprentice.
The ultimate aim is for Nico to use a mirror to interpret objects around it, in the same way as humans use a rear-view mirror to look for cars.
The research, published in the Royal Society's Proceedings: Biological Sciences, was carried out on cows, but the authors claimed similar antibiotic treatments could be just as effective in eliminating the infection in humans.
And now that we have as a national commitment to send humans to Mars some time in the future, we are trying to find out as much about Mars as we can.
As explained by James Gilmore in Authenticity, humans crave authenticity from each other and from brands.
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Another theory of the origin of modern humans, known as the multiregional hypothesis, holds that earlier forms of humans originated in Africa and then slowly developed their anatomically modern form in every area of the Old World.
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Data, he pointed out, that humans generate in huge quantities as they go about their daily digital life.
Just as the routine of courtship is constantly renewed in humans, so the Cartland stories are served by a simple plot in which only the scenery and the characters are changed.
They sequenced all the DNA they could get from samples, looking first for variations of a gene called 16S, which is not present in humans but can be used as a fingerprint for different species of bacteria.
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