How to use: creatine kinase.

Creatine kinase (CK) remains an essential tool for assessment of muscular weakness and pain in children despite the advent of advanced diagnostic tests in this field. It is also useful in diagnosing and monitoring various other conditions. This article will explore the physiology of CK and clinical situations where the estimation of CK can help the clinicians' decision-making process with the diagnosis and management of these conditions.

Author Correction: Large spontaneous exchange bias in a weak ferromagnet PbNi(TeO).

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.

Endogenous Dynamic Nuclear Polarization for Natural Abundance O and Lithium NMR in the Bulk of Inorganic Solids.

In recent years magic angle spinning-dynamic nuclear polarization (MAS-DNP) has developed as an excellent approach for boosting the sensitivity of solid-state NMR (ssNMR) spectroscopy, thereby enabling the characterization of challenging systems in biology and chemistry. Most commonly, MAS-DNP is based on the use of nitroxide biradicals as polarizing agents. In materials science, since the use of nitroxides often limits the signal enhancement to the materials' surface and subsurface layers, there is need for hyperpolarization approaches which will provide sensitivity in the bulk of micron sized particles.

Paramagnetic Metal-Ion Dopants as Polarization Agents for Dynamic Nuclear Polarization NMR Spectroscopy in Inorganic Solids.

Dynamic nuclear polarization (DNP), a technique in which the high electron spin polarization is transferred to surrounding nuclei via microwave irradiation, equips solid-state NMR spectroscopy with unprecedented sensitivity. The most commonly used polarization agents for DNP are nitroxide radicals. However, their applicability to inorganic materials is mostly limited to surface detection.

Large spontaneous exchange bias in a weak ferromagnet PbNi(TeO).

We report the magnetic and dielectric behavior of PbNi(TeO), a new compound comprising the honeycomb-like layers of S = 1 spins, through detailed structural, magnetic and dielectric investigation. An antiferromagnetic-type transition at 25 K (T ) with weak-ferromagnetic behavior is revealed. Interestingly, a large value of coercive field of 1.