In human cells, there are about 20,000 genes on a two-meter DNA strand—finely coiled up in a nucleus about 10 micrometers in diameter. By comparison, this corresponds to a 40-kilometer thread packed ...

Different as the cells from animals, plants, fungi and protozoa can be, they all share one prominent feature: a nucleus. They have other organelles, too, like the energy-producing mitochondria, but ...

Model systems based on virus capsids have shown how large biomolecules are able to penetrate a cell nucleus / The larger the molecule, the more nuclear localization signals are needed A new study in ...

Long-term potentiation (LTP) is defined as a long-lasting increase in the magnitude of the synaptic response of a neuron following a short train of high-frequency afferent stimulation or similar ...

Model for the organization of the genome in the nucleus. The rope symbolizes the DNA and the clamps are protein complexes that include the protein lamin A and can cross-link DNA. Disclaimer: AAAS and ...

Sleep spindle oscillations consist of waxing–and–waning field potentials of 7 to 14 Hz, which last 1 to 3 seconds and recur every 5 to 15 seconds. These oscillations are generated in the thalamus by ...