https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Bacteria existed for millennia before humans and have been infecting us from the beginning. Although we can treat infections through pharmaceuticals, bacteria continue to become resistant to treatment thanks to their rapid evolution. Bacterial infections remain a leading cause of morbidity and mortality in 2024, resulting in nearly eight million annual deaths globally. https://phys.org/news/2024-04-insight-bacterial-motor-powers-chemotaxis.html Cell & Microbiology Fri, 26 Apr 2024 10:04:03 EDT news633344641 Inside all of us is an army of cells called neutrophils, primed and ready to take out any invader, be it bacteria in a wound or viruses entering our airways. As the first line of defense for the immune system, neutrophils attack and call in reinforcements in a coordinated effort to prevent infection. https://phys.org/news/2022-07-unique-neutrophil-chemical-messaging.html Cell & Microbiology Mon, 18 Jul 2022 16:10:06 EDT news577379402 By and large, marine bacteria have a fairly simple existence – eat, divide, repeat. But the first step isn't always straightforward. There are lots of nutrients in the ocean, but there's no Uber Eats for microscopic organisms. They must find their food, and it's not always at arm's reach. https://phys.org/news/2019-05-superheroes-nutrient-oceans.html Evolution Tue, 14 May 2019 07:51:31 EDT news477039067 Researchers from ETH Zurich demonstrate that genetically identical cells exhibit differing responses in their motility towards chemical attractants. Average values hide the full picture when it comes to describing the behavior of bacteria. https://phys.org/news/2019-04-bacteria-reveal-strong-individuality-maze.html Evolution Wed, 24 Apr 2019 08:59:33 EDT news475315166 Researchers have found that a protein in the cell membranes of sperm plays a key role in how they find their way to eggs. The PMCA protein may also help explain how egg cells only interact with sperm from the same species. PMCA may even be a target of drug discovery. https://phys.org/news/2018-11-unraveling-mystery-sperm-cells.html Cell & Microbiology Thu, 15 Nov 2018 08:48:37 EST news461494109 Neuronal development is often regulated by the graded distribution of guidance molecules, which can either attract or repel the neuronal migration or neurite projection when presented in a format of concentration gradients, or chemotaxis. However, many details about the process are largely unexplored. https://phys.org/news/2018-11-microarrayed-d-neuronal-culture-platform.html Biochemistry Wed, 14 Nov 2018 07:01:44 EST news461401295 Many cell types in higher organisms are capable of implementing directed motion in response to the presence of certain chemical attractants in their vicinity. A team led by Dr. Doris Heinrich of the Faculty of Physics and the Center for NanoScience (CeNS) at Ludwig-Maximilians-Universitat (LMU) in Munich has developed a novel technique to expose an ensemble of living cells to rapidly varying concentrations of chemoattractants. https://phys.org/news/2011-07-cells.html Cell & Microbiology Tue, 05 Jul 2011 10:18:32 EDT news229079868