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Carbon Coating for Scanning Electron Microscopy

Material samples investigated at ideal conditions without a coating layer inevitably display charging effects, resulting in picture aberration as well as thermo-radiative degradation, which can result in considerable material removal from the specimen.

Fact MR: Surging Prevalence of Cancer to Offer Tissue Processor Equipment US$ 681 Mn Market Opportunity by 2032

Surging Prevalence of Cancer to Offer Tissue Processor Equipment US$ 681 Mn Market Opportunity by 2032

Frontiers | Stiffening of Circumferential F-Actin Bands Correlates With Regenerative Failure and May Act as a Biomechanical Brake in the Mammalian Inner Ear

The loss of inner ear hair cells causes permanent hearing and balance deficits in humans and other mammals, but nonmammals recover after supporting cells (SCs) divide and replace hair cells. The proliferative capacity of mammalian SCs declines as exceptionally thick circumferential F-actin bands develop at their adherens junctions. We hypothesized that the reinforced junctions were limiting regenerative responses of mammalian SCs by impeding changes in cell shape and epithelial tension. Using micropipette aspiration and atomic force microscopy, we measured mechanical properties of utricles from mice and chickens. Our data show that the epithelial surface of the mouse utricle stiffens significantly during postnatal maturation. This stiffening correlates with and is dependent on the postnatal accumulation of F-actin and the cross-linker Alpha-Actinin-4 at SC-SC junctions. In chicken utricles, where SCs lack junctional reinforcement, the epithelial surface remains compliant. There, SCs un

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