In addition to stem cell biology, tissue engineering is an essential research field for regenerative medicine. In contrast to cell injection, bioengineered tissue transplantation minimizes cell loss and has the potential to repair tissue defects. A popular approach is scaffold-based tissue engineering, which utilizes a biodegradable polymer scaffold for seeding cells; however, new techniques of...

Nuclei of medulloblastoma cells revealed two types of structural changes: formations of cistern-limited nuclear sheets and intranuclear vacuolar profiles or myelin figures. The cistern-limited nuclear sheets were extremely elongated and were contained on either side by the perinuclear cisterns. They were usually composed of a central granular or beaded heterochromatin layer between less dense l...

It has been argued that a magnetic eld which is initially continuous and is line-tied to rigid boundaries in a continuous manner cannot develop tangential discontinuities or current sheets. This would appear to have many consequences in those theories of reconnection and coronal heating which are based on the existence of such current sheets. It is shown here that while the non-existence of cur...

Layer-separated 3D nitrogen doped graphene (NG) with an accessible interstitial surface and modulated activity characteristics for oxygen reduction in acidic medium could be prepared by wrapping NG sheets on in situ generated carbon nitride (CNx) tetrapods.

Two dimensional thin layer chromatography on polyamide sheets is a useful method for identification of PTH-amino acids which have very close Rf-values. The solvent systems described here are particularly effective and have an edge over other solvent systems used for the separation of PTH-amino acids. The solvent systems provide a clear separation of all PTH-amono acids except lle / Leu in a...

We report a simple, practical scalable procedure to produce few-layer graphene sheets using ball-milling. Commercially available melamine can be efficiently used to exfoliate graphite and generate concentrated water or DMF dispersions.

Hubel and Wiesel (1962) classified primary visual cortex (V1) neurons as either simple, with responses modulated by the spatial phase of a sine grating, or complex, i.e., largely phase invariant. Much progress has been made in understanding how simple-cells develop, and there are now detailed computational models establishing how they can form topographic maps ordered by orientation preference....