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49 articles from ScienceDaily

Some seafloor microbes can take the heat: And here's what they eat

In two new studies on life in the seafloor of the Guaymas Basin, in the Gulf of California, scientists show that distinct regions within the Basin harbor specially adapted microorganisms; discover new microbial inhabitants of this deep-sea community; and suggest how the community may be dramatically influencing carbon cycling in the hot seafloor sediments.

In many cases, MS starts long before the diagnosis

Years before they are diagnosed, persons with multiple sclerosis (MS) make significantly more visits to doctors and hospitals than others. Specialists have recently discussed whether this might represent a preliminary phase of MS - known as a prodrome. A new study suggests that, in many cases, the complaints may relate to unrecognized early clinical MS events.

Flash mob in the nucleus

The nucleus is much more than a storage compartment for chromosomes: It also contains the complex machinery producing transcripts of the genes that are currently needed and releases them into the cell body. Some of the proteins involved herein are not evenly distributed in the nucleus, but cluster at specific sites. A study now shows how these 'flash mobs' are regulated.

How pancreatic cancer cells dodge drug treatments

Pancreatic cancer cells typically rely on a mutant version of the KRAS protein to proliferate. These cancer cells can also survive losing KRAS by activating alternative growth pathways. Scientists discovered a new interaction between mutant KRAS and a protein complex called RSK1/NF1 that may be the source of this adaptive resistance.

Exotic superconductors: The secret that wasn't there

The mystery of an exotic kind of superconductivity has been solved, researchers say -- by showing that it just does not exist. An effect, which has been celebrated since the 1990s has now been shown to be standard superconductivity. Still, this realization leads to important new ideas.

Did the ancient Maya have parks?

Researchers developed a novel system to analyze ancient plant DNA in the sediment of Tikal's temple and palace reservoirs to identify more than 30 species of trees, grasses, vines and flowering plants that lived along its banks more than 1,000 years ago. Their findings paint a picture of a lush, wild oasis in the ancient Maya city.

Salt marsh plants may signal carbon capture capacity

Coastal wetlands like seagrass meadows, mangroves, and salt marshes play vital roles along the shoreline, from providing a buffer against storm surges, to providing critical habitat for animals, to capturing atmospheric carbon. We are still just beginning to comprehend the intricate workings of these highly productive ecosystems and their role in mitigating the climate crisis, but researchers are...

Inherited risk of early-onset cancer is higher among minority families

A new study shows inherited risk of early-onset cancer is significantly higher among Latino and African American families for solid tumors, and Asian/Pacific Islander families for blood-based cancers, compared to non-Latino white families in California. Researchers used California population-based health registries to evaluate the relative cancer risk among first-degree relatives of patients...

Cohesin opens up for cell division

Scientists have uncovered a mechanism that allows a protein complex to bind to DNA without impeding some of the important processes of cell division. Their findings could further understandings of developmental disorders arising from mutations in the gene that codes for the complex.

Boost for mouse genetic analysis

To understand what role an individual gene plays, biologists have, for 100 years, been using a trick of nature: While in principle, the genome in all cells of an organism is the same, mutations arise in individual cells. These mutations differentiate a cell from its neighbors, forming a 'genetic mosaic.' Now, researchers have advanced genetic mosaic analysis, making almost all genes in the mouse...

Sports: Men and women react differently to a missing audience

Without an audience, men run slower and women faster: The lack of spectators during the coronavirus pandemic appears to have had a noticeable effect on the performance of athletes at the 2020 Biathlon World Cup, a new study shows. According to the new analysis, women also performed better in complex tasks, such as shooting, when an audience was present while men did not.