Researchers at Mayo Clinic found that frozen sperm are just as effective as fresh sperm in in vitro fertilization. The cumulative live birth rate was higher for frozen sperm, with a success rate of 53.1 percent compared to 51.6 percent for fresh sperm.
Researchers at the University of Toronto have successfully created a three-photon entangled state, enabling precise measurements that surpass those made by single photons. The breakthrough has the potential to revolutionize fields like quantum computing and gravitational wave detection.
A recent study by Merrill and colleagues found that soy GlcCer, a type of sphingolipid, can reduce the number of tumors in mice with colon cancer. The study's results suggest that consuming soybeans may help prevent colon cancer by targeting beta-catenin, a protein involved in cell growth.
Researchers discovered that migratory birds can detect fluctuations in magnetic fields using a molecular substrate for chemical reactions. The study found that the birds' sensitivity to artificial magnetic fields ruled out the use of simple magnetic materials in their beaks or brains.
Researchers at VIB have developed nanobodies, tiny proteins that can target specific cancer cells. These nanobodies have shown promise in treating various diseases, including inflammatory and heart conditions.
A gene mutation may cause misrouting of proteins in retinal cells, leading to macular degeneration. Research aims to understand the biological function of the gene and its role in fatty acid metabolism.
Recent study by Yale University's Richard Easther and colleagues proposes that the Cosmic Microwave Background (CMB) may contain evidence for string theory. The CMB is thought to hold a fossilized record of the first moments of time, with subtle fluctuations potentially revealing signs of string theory.
A study by University of Washington researchers exposes the existence of two distinct circadian clocks within the mammalian brain, one tied to an internal schedule and another influenced by external light-dark cycles. The discovery sheds new light on how artificial day-night cycles can disrupt physiological rhythms in mammals.
Researchers used fMRI to study brain activity in response to rewards, finding that reward centers were activated when participants actively received the reward. Active participation was found to be more salient and arousing than passive receipt, highlighting its importance for brain function.
Since 1991, end-of-life care has seen significant improvements in palliative care and hospice availability. Timothy Quill's father's death provided a unique opportunity to illustrate the good and bad in end-of-life care, highlighting the need for consistent availability of care options.
Scientists have developed fruit flies with fluorescent genes to study memory formation, discovering that a specific set of neurons, called projection neurons, show increased active connections after learning. The new synaptic activity disappeared within minutes but the flies continued to avoid the odor they associated with the shock.
Researchers recorded activity of individual hippocampal neurons as monkeys retrieved well-learned information from memory, finding stronger response to familiar stimuli. The study provides strong evidence for a memory signal specific to well-learned information and may inform treatments for Alzheimer's Disease.
Researchers at Duke University found that ringtails and mongoose lemurs can learn sequences of pictures and discriminate quantities. The animals show a systematic learning ability and can recognize larger quantities, but their numerical abilities are not as sophisticated as those of monkeys and apes.
A recent study has found that minimally invasive laparoscopically assisted colectomy is an acceptable alternative for treating colon cancer when performed by experienced surgeons. The procedure's success depends on stringent surgical standards being followed.
A study by UC Berkeley post-doctoral fellow Vance T. Vredenburg shows that non-native trout have devastated native frog populations in high-Sierra lakes, but removing fish allows the frogs to flourish. The mountain yellow-legged frog has declined dramatically due to introduced trout, with only 5,000 adults remaining in its range.
The Geisel School of Medicine at Dartmouth has secured a $9 million grant to study Neurospora crassa, a fungus with significant animal, human and plant pathogens. The research will focus on understanding the genetic functions of this model organism.
A team of European astronomers discovered a massive star surrounded by a huge accretion disc, pushing the understanding of high-mass star formation. The large disc, resembling a flared disc seen nearly edge-on, is associated with an hour-glass shaped reflection nebula and reveals details about star formation processes.
A new 'hyperactive' antifreeze protein has been identified in the blood of winter flounder, enabling them to withstand temperatures as low as -1.9 degrees Celsius. This discovery explains the previously unknown mechanism behind these fish's survival in polar oceans.
A seven-year international study involving 872 patients with colon cancer has resolved concerns about laparoscopic surgery, finding it to be as safe and effective as standard surgery. The study found similar rates of complications, cancer recurrence, and overall survival between the two groups.
Pearly mussel populations are declining due to negative growth rates and environmental degradation. Researchers urge simultaneous research and conservation actions to protect these ancient freshwater organisms.
Researchers at Tufts University are developing a flexible robot that can navigate through the human body and complex structures, inspired by the unique movement of caterpillars. The team is studying the nervous system control of caterpillar locomotion to replicate this movement and build soft-bodied robots.
Researchers created a controlled environment to test various weather conditions and their effects on post oak, bluestem grass, and juniper species. The study aims to understand how these changes may alter land use and wildlife survival in the region.
A new study confirms long-held theories that CWD can be transmitted through indirect means, including contaminated environments. The research suggests that environmental sources of infection may contribute to CWD epidemics, potentially altering management strategies for the disease.
Researchers found a broad range of nitrogen-to-phosphorus ratios possible in phytoplankton, contradicting the long-held Redfield ratio of 16:1. The new model takes into account varying growth conditions and optimal strategies for nutrient uptake, with implications for ocean ecosystem and climate change.
New research suggests two distinct brain areas, the hippocampus and subiculum, work together to process and store information for short-term memory. This finding broadens understanding of how memory works and could lead to more sensitive tests and treatments for conditions like Alzheimer's disease.
The US Department of Energy is developing a new supercomputer at Oak Ridge National Laboratory to enhance the nation's computing capability for complex simulations. The system will be open to researchers worldwide and enable breakthroughs in various science disciplines.
A study by Johns Hopkins Medicine found that showing graphic images of actual trauma to at-risk youth reduces their quantified beliefs supporting aggression. The research also suggests a reduction in the likelihood of youths resorting to violence to settle conflicts.
A team of scientists has successfully achieved the first live births of killer whales through artificial insemination. The study, led by Dr. Todd R. Robeck, used genome resource banking and artificial insemination to store sperm from male orcas for later use. This breakthrough may help maintain genetic diversity in captive marine mammals.
A pair of researchers from the University of Wisconsin-Madison developed mathematical models examining changes in a community's tolerance to environmental conditions like global warming or acid rain. They found that as individual species disappear, two forces act upon the community, making it more or less tolerant to the condition.