Sentences with phrase «remains unknown»

These phenotypes are clearly the result of adaptation to this environment, but their genetic basis remains unknown.

The significance isn't clear, because the same antibodies can defend against other, related viruses, and the specific trigger in this case remains unknown.

While firms cluster in cities to recruit talent and realize higher productivity gains, how pollution scales with population growth remains unknown.

The findings suggest a potential link between stress and gut microbes, but the exact relation remains unknown.

X-ray radiography was the first non-invasive tool used to uncover hidden information in «La Miséreuse accroupie»; it revealed a horizontal landscape by a different Barcelona painter, whose identity remains unknown, under the visible surface of Picasso's painting.

The cause remains unknown.

The Sun is the source of energy that sustains all life on Earth but much remains unknown about it.

Saturn is the only planet in the Solar System whose rotation time remains unknown.

These highly energetic bursts of hard radiation have been seen by gamma - ray satellites such as Fermi and Swift, but the exact origin of these quickly disappearing flashes of gamma - rays remains unknown.

So even with our new understanding of its history, the purpose of the penis bone remains unknown.

And, in fact, what causes the brain to move between states of consciousness and unconsciousness — to and from the critical point — remains unknown.

Exactly how often birth defects occur among pregnant women with Zika remains unknown.

But the tremendous diversity we see in the properties of the brown dwarf population means that there is still so much about them that remains unknown or poorly understood.

Although the precise color of the skin remains unknown, the data confirm previous evidence that the hadrosaur's skin might have had stripes.

Blastema growth may depend on a factor that remains unknown which may link brain and global regeneration.

There have been almost 750 cases of listeriosis in South Africa so far, and the source of the food poisoning infection remains unknown

While it remains unknown exactly how VR works to reduce pain, Spiegel attributes the benefit to what he calls «immersive distraction.»

Their detailed role, however, remains unknown.

How the cells of the plant communicate with one another remains unknown.

Genes also play a role, but much remains unknown.

What advantage the colorful feathers provide for Little Blue remains unknown, but they certainly aren't being caught dead in the same black and white tuxedo as most of their relatives.

However, how IBD develops remains unknown.

The exact process remains unknown, however, and astrophysicists had thought that only the event horizon surrounding a black hole — the rotating circular zone beyond which nothing can escape, not even light — could produce jets of x-rays on such a scale.

Much remains unknown about how most introduced species affect natural ecosystems.

It remains unknown why pollution may stimulate blooms of Pfiesteria more than others, but the answer may relate to the fact that this species can take up certain forms of organic nutrients, such as dissolved amino acids, that are found in pollution.

Snoring without evidence of obstructive sleep apnea may be an independent risk factor for hypertension and the daytime behavioral problems mentioned above, but how snoring alone causes problems remains unknown.

It may be surprising to learn that much remains unknown about radiation's effects on materials.

Despite the accelerated pace of research, much remains unknown about the virus, raising unique challenges in developing a vaccine.

«The underlying cause of psoriasis remains unknown, and the specific signals that trigger disease onset are still being investigated.

«There is still so much about brown dwarfs that remains unknown,» explained Weinberger.

They should not prescribe untested, improvised nasal sprays for which absorption remains unknown, probably poor and likely vary variable.»

Much remains unknown about the epoch of reionization, such as what sources of light caused reionization.

The choanoflagellates, for their part, may use high concentrations of EroS as a sign that conditions are suitable for sexual reproduction — though why that is so remains unknown.

They're fascinating to astronomers for a variety of reasons, but much about them remains unknown.

The dorsomedial prefrontal cortex (dmPFC) has been implicated in the long - term regulation of social dominance, yet the exact mechanism behind the «winner effect» remains unknown.

The reason behind the abnormal metabolic profile in epileptic tissue remains unknown and needs to be studied further, said Loeb.

GPCRs are the targets of dozens of drugs and are involved in vision, smell and responses to many hormones and neurotransmitters, but exactly what triggers BAI1's G - protein signals remains unknown, Van Meir says.

The cause of CCD remains unknown.

And although the size of the EDM remains unknown, the most popular theories predict it is big enough to detect.

Even though scientific studies also support that crude powder of Ashwagandha promotes sleep, the active component with sleep - inducing property remains unknown.

Much remains unknown.

Rather than ordinary spot - testing approaches, which look for unnatural ratios between biological constituents in a single sample or for direct chemical evidence of known doping agents, the passport allows investigators to see the big picture — any deviations from the rider's test - established norm that might result from doping, even if the specific drug or tactic remains unknown.

While amphibians all over the world are undergoing a continuous decline, their status in certain regions, such as Central Africa, remains unknown due to incomplete information.

That finding led to new questions: and the scientists now suggest that TYC 2505 -672-1 is actually a double star system, though a nature of its companion remains unknown.

No meteorites on Earth have ever been linked with Ceres, so its surface composition remains unknown, though it may be layered with water - rich minerals, and frost might cover its poles.

But despite the new insights gained, de Vries emphasizes that much still remains unknown about the full spectrum of what Aspergillus can do.

On the other hand, a lot remains unknown about impacts.

When only two assessments are available, what happens between them remains unknown.

We have yet to hear of the condition of the lander — much remains unknown about its health, or how benign the environment is: whether it is sitting flat and happy.

The number of embryos that survive and die before implantation remains unknown.