Three months after the tests, the normal mice were still drinking the original amount.
However, three weeks later the mutant mice began drinking approximately three times more alcohol than the normal mice.
But the researchers noted that they mounted less often, were less apt to penetrate and did not stick at it for as long as the normal mice.
When the researchers infused the drug into mice with DMD they found it restored the volume of the hearts major pumping chamber to that of normal mice.
They found that, in comparison with normal mice, their nerves were far less likely to recover following injury - suggesting that c-Jun is a major regulator of the axonal response.
In one experiment 60% of mice missing something called the gamma interferon receptor on their cells got tumors after being exposed to a carcinogen, versus only 15% of normal mice.
They also showed that injecting normal mice with extra ghrelin increased the number of synapses in the hippocampus - and improved the animals' performance in several learning and memory tests.
But when they became adults, the mice fed a high fat diet showed four times the neurogenesis of the normal mice, and gained significantly more weight and had much higher fat mass.
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The research was done in mice, and compared how mice who lacked the PTCy protein reacted to being fed at night, vs. how normal mice reacted. (Normal mice woke up to eat, mice without PTCy slept through their feedings).
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The scientists raised mice lacking normal gut microflora, then compared their behavior, brain chemistry and brain development to mice having normal gut bacteria.
After 28 days, glucose levels returned to normal in diabetic mice that received the VEGF implants through the intestine.
This effect lasts until a few days after the last injection, at which point the mice resume normal feeding.
Mice bred in sterile environments without these "gut flora" were seen to be more adventurous and less anxious than mice with normal gut flora.
Scientists are trying to develop other drugs that athletes might choose to abuse, including gene therapies, a spate of experimental medicines that turn normal rodents into mighty mice and new growth hormones.
Like normal males, the mutant mice urinated in various spots around their cage (unlike females, who create a single latrine).
As a result, tumours in mice that were fed the extract - dimethyl fumarate (DMF) - were significantly smaller than those in mice given a normal diet.
Mice in both the normal and warm environments responded similarly, suggesting that the gas is directly responsible.
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Dr Steven Goldman told the BBC that "myelin was produced throughout the nervous system" and some mice had achieved "normal life spans".
The mice were compared with normal males in tests of masculinity.
"Germ-free" mice, born without the bugs and protected from their arrival, have shown a number of effects distinct from mice born in the normal way.
Ryuzo Yanagimachi, a biologist at the University of Hawaii, found that when he cloned a certain strain of mice prone to have diabetes, the clones would look normal at birth, but upon reaching puberty -- which, in mice, is after eight weeks -- they gained weight.
After each experience, all the mice continued to drink the normal amount of alcohol.
Results of an animal study published by Ohio State University researcher Qinghua Sun in late 2010 revealed that early exposure to fine particulates led to the accumulation of abdominal fat and insulin resistance in mice even if they ate a normal diet.
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They found that in allergic mice the dendritic cells are much longer lasting than normal, which over-stimulates the immune system.
When the mice were given pure air again, they returned to normal within less than 30 minutes.
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They found that the peptide was overly abundant in the mutant mice, and that its expression was usually repressed by the normal version of MeCP2.
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The study compared mice fed a high-fat diet with those fed a normal, healthy diet, and exposed some members of both groups daily to fine particulate matter, controlling for all other factors.
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From past work, scientists know that mice that lack the molecular receptors needed to detect CRH are less anxious than normal animals.
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