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25 articles from ScienceDaily

Tracking the pathway to immunity, one cell at a time

Vaccines work their magic by effectively creating immune cells that are long lived, often for over decades. These immune cells create both a protective barrier that can prevent or minimize re-infection and a memory that allows us to recognize an old invader like a virus and to kill it before it causes disease. The antibody in our blood that is the barrier is made by 'long lived plasma cells' and...

Cellular housekeeping process implicated in fatal neurological disorder

A study shows that as patients age, Huntington's disease impairs autophagy, which eliminates waste from cells. This housekeeping is significant in Huntington's because a buildup of waste in a specific kind of neuron leads to such cells' untimely deaths. The researchers also showed that enhancing the autophagy pathway in such neurons that were created from skin cells of Huntington's patients...

Researchers reveal why shingles can lead to stroke

Scientists investigating why people who have had shingles are at a higher risk of stroke, now believe the answer lies within lipid vesicles called exosomes that shuttle proteins and genetic information between cells, according to new research.

Safe, sustainable photo-on-demand synthesis of polypeptide precursors: Promising 'building blocks' for new functional materials

Animals such as spiders make fibers which are strong and elastic. These fibers have a polypeptide structure and serve as inspiration for research into the development of functional materials. Alpha-amino acid N-Carboxyanhydrides (NCAs) are precursors for artificial polypeptides, however they are difficult to produce. Using the photo-on-demand method that they previously developed, a research group...

El Niño increases seedling mortality even in drought-tolerant forests

Scientists conducted a 7-year study on seedling recruitment and mortality in a national park in Chiang Mai, in northern Thailand. During the study period, an extremely strong El Niño event occurred, leading to a stronger and longer drought than normal. Seasonally dry tropical forests (SDTFs), which experience an annual dry season, are considered drought-tolerant. Nevertheless, the study found...

Hybrid songbirds found more often in human-altered environments

Hybrids of two common North American songbirds, the black-capped and mountain chickadee, are more likely to be found in places where humans have altered the landscape in some way, finds new research. It's the first study to positively correlate hybridization in any species with landscape changes caused by humans, and the first to examine this relationship across an entire species' range --...

A stem cell protein facilitates relapse of pediatric brain tumors

The malignant brain tumor type medulloblastoma can become resistant to therapy which can cause relapse. Researchers have discovered a certain protein that makes tumor cells resting and insensitive to radiation treatment. The research group hopes that the results could eventually lead to better treatments for children that have the highest risk to develop relapses.

Discovering the unknown processes of the evolutionary history of green lizards in the Mediterranean

The evolutionary clade and biodiversity of green lizards of the genera Lacerta and Timon -- reptiles common in the Mediterranean basin and surrounding areas of the European continent, North Africa and Asia -- have never been studied in detail from the perspective of historical biogeography. Now researchers present a new scenario for deciphering the potential evolutionary processes that have acted...

New form of universal quantum computers

Computing power of quantum machines is currently still very low. Increasing it is still proving to be a major challenge. Physicists now present a new architecture for a universal quantum computer that overcomes such limitations and could be the basis of the next generation of quantum computers soon.