Researchers at the University of Notre Dame discovered that Factor VII deficient mice embryos developed normally throughout gestation, despite suffering fatal perinatal bleeding after birth. The study suggests a new avenue for exploration of coagulation proteins' role in embryonic development.
A recent study found that premature infants with bronchopulmonary dysplasia (BPD) are at a higher risk of cognitive and motor development problems. By 3 years of age, about 21% of BPD patients showed signs of retardation compared to less than 10% without the condition.
A recent study by Daniel S. Kessler found that activation of siamois, a homeobox gene, is required for the formation of Spemann's organizer in frogs. The siamois gene is turned on by Wnt proteins and activates organizer genes, crucial for embryonic development.
Researchers found that imagining visual stimuli activates short-term memory, lowering the threshold of brightness for visual perception. This phenomenon suggests separate neural mechanisms control short- and long-term visual memory, with imagination enhancing visual abilities.
A recent review of data suggests that comet impacts on Earth may be random events common to scientific instruments using image intensifiers. Dr. Louis Frank's claims of small comets striking the atmosphere have been challenged by NASA scientist Dr. James Spann, who attributes similar dark smears in images to instrument noise.
Scientists have mapped a previously uncharted area of the Southwest Indian Ridge, revealing a steepest underwater cliff ever recorded. The discovery may shed new light on the origins of primitive life forms, with some biologists suggesting that hydrothermal vents could hold the key to life's beginnings.
Scientists are studying the Hayward Fault, South Bay Stepover, and Loma Prieta to better understand their movement patterns. They found that some portions of the fault have locked up, leading to unrelieved stress at greater depths, while others exhibit complex creeping behavior.
Researchers at NASA's Marshall Space Flight Center found that the Earth's polar fountains of energized gas are a significant source of material for the magnetosphere, contradicting previous assumptions. The discovery was made using a device called TIDE, which neutralizes spacecraft plasma sheaths to detect low-energy ions.
Researchers used a novel test to measure damaging activity of free radicals in body tissues, finding high levels in atherosclerotic plaque tissue. The technique provides a real handle on oxidant processes in atherogenesis and could lead to clinical studies testing efficacy of drugs limiting free-radical damage.
University of Washington geophysicist George Parks analyzed Louis Frank's ultraviolet camera images and concluded that the white snow in space is likely instrument noise. A closer examination of the data revealed statistical evidence supporting this finding, suggesting that the 'snowballs' are not actual cosmic phenomena.
The US EPA has established a Drinking Water Optimization Institute at the University of Cincinnati to help utilities comply with new regulations. The institute will focus on optimizing water treatment methods, distribution systems, and raw water sources to meet safety standards.
Researchers found that ewes' antibodies are passed to lambs through colostrum, making vaccination unnecessary until past the age of 6 weeks. This schedule change can save time and energy for farmers, with significant benefits for national agriculture.
Researchers grew viable cartilage tissue from bovine cells on polymer scaffolds, but found that tissues grown in space were smaller and mechanically weaker than those on Earth. This study demonstrates the feasibility of cultivating cells and tissues in space over long periods.
Researchers have discovered a chaperone protein from yeast that controls a new, protein-only form of inheritance called a yeast prion. The discovery links the mechanism responsible for this new form of inheritance to neurodegenerative diseases such as Alzheimer's and Creutzfeld-Jakob disease.
A survey of parents with children diagnosed with chronic conditions found that more than a third of non-supportive incidents came from healthcare providers, with physicians being the most common culprit. The study highlights the importance of sensitive and accurate information delivery by healthcare professionals to support families' a...
Scientists predict small-scale spark channels form at the breakdown points, propelled upward with velocities as fast as one-tenth of the speed of light. The new model explains recent observations of sprites, including intense bursts of blue light and radio waves in the extremely low frequency band.
Researchers created P-cadherin-deficient mice to investigate the function of P-cadherin in controlling mammary tissue growth. The study found that P-cadherin plays a crucial role in maintaining undifferentiated breast tissue, and its absence leads to hyperproliferation.
Children with better-than-20/800 vision showed significant improvements in development compared to those with impaired vision. The study found that a specific range of visual acuity affects children's ability to establish eye contact, bond with parents, and develop social skills.