Regional differences in activator and inhibitor signals alter hair cycle pace across mouse skin and produce unique fur renewal 'landscapes', with fastest renewal on the ventrum and slowest renewal on the ear pinnae.
Inhibition enhances the spatial specificity of high calcium influx for cooperatively stimulated synapses, suggesting that inhibitory inputs may regulate both synapse-specific and heterosynaptic plasticity to support learning and memory.
Super-resolution STED microscopy is demonstrated for the first time in the deeply embedded mouse hippocampus in vivo, revealing direct evidence for an unprecedentedly high level of synapse remodeling in a brain structure closely associated with memory processing.
Caenorhabditis elegans has bona fide dendritic spines, suggesting that the advantages of small model organisms, such as genetic manipulations and live-cell imaging, can be exploited to study dendritic spines.
Skin epithelium can tolerate oncogene-expressing clones through a novel cellular mechanism of inter-clonal competition between renewing progenitors along the clone's edge and differentiating progenitors within the clone's core.