415 results found
    1. Neuroscience

    Ultrastructural comparison of dendritic spine morphology preserved with cryo and chemical fixation

    Hiromi Tamada et al.
    Cryo preservation of brain tissue reveals dendritic spines with thinner necks compared to those prepared with chemical fixation.
    1. Neuroscience

    Ultrastructural analysis of adult mouse neocortex comparing aldehyde perfusion with cryo fixation

    Natalya Korogod et al.
    Snap-freezing of brain tissue reveals its true structure-showing that cells are less squashed together, and the connections between neurons are less enclosed than previously thought.
    1. Cell Biology
    2. Plant Biology

    From plasmodesma geometry to effective symplasmic permeability through biophysical modelling

    Eva E Deinum et al.
    A new biophysical model enables the reconciliation of ultrastructural and tissue level measurements on parameters affecting intercellular communication, and provides novel functional insight into experimental findings.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    A high-resolution morphological and ultrastructural map of anterior sensory cilia and glia in Caenorhabditis elegans

    David B Doroquez et al.
    The three-dimensional structures of 50 sensory cilia present in the head of the adult C. elegans hermaphrodite have been reconstructed to provide a foundation for investigations into the mechanisms by which the diversity of cilia structures is generated and how this structural diversity is related to specific sensory neuron functions.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    High-quality ultrastructural preservation using cryofixation for 3D electron microscopy of genetically labeled tissues

    Tin Ki Tsang et al.
    A broadly applicable method that faithfully preserves genetically labeled cellular structures for 3D electron microscopy (EM) and correlated light and electron microscopy (CLEM).
    1. Neuroscience

    Ultrastructural heterogeneity of layer 4 excitatory synaptic boutons in the adult human temporal lobe neocortex

    Rachida Yakoubi et al.
    Neocortical synapses in layer 4 of the human temporal lobe neocortex were quantitatively characterized, at the subcellular level, using high-end, high-resolution electron microscopy and 3D-volume reconstructions.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Changes of mitochondrial ultrastructure and function during ageing in mice and Drosophila

    Tobias Brandt et al.
    Respiratory activity and inner membrane organisation of mitochondria from Drosophila melanogaster break down during ageing, but mouse heart mitochondria appear to be protected against age-related damage.
    1. Developmental Biology

    Multiscale cardiac imaging spanning the whole heart and its internal cellular architecture in a small animal model

    Graham Rykiel et al.
    Correlative imaging of the heart at multiple spatial scales has the potential to revolutionize the way we understand deficiencies in congenital heart disease.
    1. Cell Biology
    2. Neuroscience

    Modeling of axonal endoplasmic reticulum network by spastic paraplegia proteins

    Belgin Yalçın et al.
    Proteins of the reticulon and REEP families, homologous to the products of human Hereditary Spastic Paraplegia disease genes, contribute to shaping and continuity of the axonal endoplasmic reticulum network in Drosophila.
    1. Cell Biology
    2. Physics of Living Systems

    Graded titin cleavage progressively reduces tension and uncovers the source of A-band stability in contracting muscle

    Yong Li et al.
    Elastic forces generated by the giant protein titin define both passive and active tension of skeletal muscle fibers and protect the sarcomeric myosin filaments from severe disruption during contraction.

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