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ScienceDaily: Plants & Animals News |
| Radioactive radiation could damage biological tissue also via a previously unnoticed mechanism Posted: 27 Dec 2021 12:43 PM PST When cells are exposed to ionizing radiation, more destructive chain reactions may occur than previously thought. An international team led by researchers has now observed intermolecular Coulombic decay in organic molecules. This is triggered by ionizing radiation such as from radioactivity or from space. The effect damages two neighboring molecules and ultimately leads to the breaking of bonds – like the ones in DNA and proteins. The finding not only improves the understanding of radiation damage but could also help in the search for more effective substances to support radiation therapy. |
| ‘Battle of the sexes’ begins in womb as father and mother’s genes tussle over nutrition Posted: 27 Dec 2021 12:43 PM PST Scientists have identified a key signal that the fetus uses to control its supply of nutrients from the placenta, revealing a tug-of-war between genes inherited from the father and from the mother. The study, carried out in mice, could help explain why some babies grow poorly in the womb. |
| Communication between cells plays a major role in deciding their fate Posted: 23 Dec 2021 07:54 PM PST Scientists have found a way to prove that biochemical signals sent from cell to cell play an important role in determining how those cells develop, findings that can help explain how stem cells differentiate and how cancer arises and proliferates, possibly leading to new treatments. |
| Remote areas are not safe havens for biodiversity, research shows Posted: 22 Dec 2021 07:08 AM PST Remote localities are generally considered as potential reservoirs for biodiversity, but this is just part of the story. With regard to fish communities, researchers have produced a global map of risk that shows that no place is safe, regardless of distance from humans. |
| Posted: 22 Dec 2021 07:08 AM PST They are at the forefront in the fight against viruses, bacteria, and malignant cells: the T cells of our immune system. But the older we get, the fewer of them our body produces. Thus, how long we remain healthy also depends on how long the T cells survive. Researchers have now uncovered a previously unknown signaling pathway essential for T cell viability. |
| Posted: 22 Dec 2021 07:07 AM PST Scientists have developed a plant-based emulsifier that is not only rich in protein and antioxidants, but has the necessary properties to replace eggs or dairy in food staples such as mayonnaise, salad dressings, and whipped cream. The emulsifier also helps cut down on food waste, as it is made by fermenting brewers' spent grain, a by-product of the beer-making industry. |
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