GoKawiil
Tech News
Researchers describe Delphy, a phylogenetics tool that encodes evolutionary trees as timed nodes carrying explicit mutation and 'missation' (missing-data) annotations relative to a reference sequence. This design lets the software efficiently reconstruct full sequences at any tree point and handle uncertain tip collection dates, aiming to make Bayesian phylogenetic analysis fast enough for near-real-time outbreak response.
Researchers sequenced and analyzed genomes of the sedge Rhynchospora tenuis and a related species, R. austrobrasiliensis, using PacBio HiFi and Hi-C sequencing alongside cytological studies of meiosis. They found that R. tenuis undergoes sexual reproduction but skips the genetic recombination step known as crossing over, producing offspring genetically similar to clones despite reproducing through pollen and eggs.
Researchers used K562, Jurkat and HEK293T cell lines to test a genome-editing technique called prime assembly, which combines prime editing components (PE7 or PEmax) with pegRNAs and various DNA donor templates to insert genetic sequences at targeted genomic sites. The team tested donor formats ranging from short synthetic single-stranded DNA to large double-stranded DNA fragments up to 12.1 kilobases, optimizing nucleofection conditions for each donor type.
Scientists purified and structurally analyzed SC003-mi3, an engineered virus-like particle derived from i3-01 with cysteine mutations and a SpyCatcher domain for attaching other proteins. Using E. coli expression, ammonium sulfate precipitation and dialysis, they produced pure particles suitable for detailed molecular observation of how the nanoparticle assembles itself.
A compiled reference list surveys recent research on heterogeneously integrating single-crystalline nanomembranes onto photonic and electronic platforms, covering methods like remote epitaxy, van der Waals layer transfer, and atomic lift-off. The cited works span parametric amplifiers, expanded photonic spectra, oxide membrane integration, and applications from infrared detectors to micro-LEDs.
A new study introduces patient-specific neural network models that rapidly align 2D X-ray images with 3D CT scans during image-guided surgical procedures. The approach aims to replace slower, less reliable traditional registration methods used in orthopedic, spine and interventional surgeries.
Researchers used structural biology techniques, including crystallography and molecular cloning of Arabidopsis proteins such as NPR1, NPR3, NPR4, MED15 subunits and TGA3, to map how the hormone salicylic acid triggers plant defense gene transcription. The work details the physical interactions between the NPR1 receptor and Mediator complex components that turn on immune responses in plants.
CERN's BASE-STEP experiment built a compact catching trap using 15 stacked electrodes and magnetic confinement to capture antiprotons from a degraded beam, cool them with cotrapped electrons, and clean out contaminant particles like electrons and negative ions through voltage ramping and dipolar drives. The particles are then moved into a compensated Penning trap at the center of the device for stable, non-destructive detection and storage.
Researchers analyzed post-mortem human fetal brain tissue collected across periods 13 to 24 weeks post-conception, sourced from multiple US and UK tissue banks under ethical approval, to study how the prefrontal cortex becomes distinct from motor regions. They identified a self-regulating retinoic acid signaling loop active during the mid-fetal stage that appears to guide this regional specialization as the cortical plate consolidates and thalamocortical connections form.
Researchers built a high-resolution dark-matter N-body simulation, seeded with Planck cosmological parameters, tracking halo mergers from redshift 35 to 7.5 using ROCKSTAR and CONSISTENT-TREES tools. They layered a semi-analytic galaxy-formation model onto this framework to simulate gas cooling, star formation, supernova feedback and radiation, showing that overmassive black holes and compact 'little red dot' galaxies emerge naturally from these early-universe conditions without requiring exotic physics.
Researchers at the Allen Institute and Johns Hopkins used Dbh-Cre mice with fluorescently labeled nuclei, tissue clearing, and light-sheet microscopy to image and count noradrenaline-producing neurons in the locus coeruleus at cellular resolution. They applied a deep-learning pipeline to detect neuron centroids and registered the data to a standard brain atlas to build detailed 3D density maps of this small but influential brainstem nucleus.
Researchers at the University of Washington collected tissue from 20 bladder cancer patients through a rapid autopsy program, gathering normal tissue, primary tumor samples and up to seven metastases per patient—108 specimens total obtained within hours of death. Samples with high tumor purity were sequenced to trace how bladder cancer spreads and diversifies genetically across different organs in the same patient.