Collective Modes at a Disordered Quantum Phase Transition.

We study the collective excitations, i.e., the Goldstone (phase) mode and the Higgs (amplitude) mode, near the superfluid-Mott glass quantum phase transition in a two-dimensional system of disordered bosons.

Induction of apoptosis by idarubicin: how important is the plasma peak?

Objectives: It is still not clear whether a high plasma peak or a prolonged plasma presence of the drug is optimal for chemotherapy with anthracyclines. A high plasma peak seems to correlate with the liberation of oxygen radicals and cumulative delayed cardiotoxicity, and therefore, should be avoided. On the other hand, its role in attaining the desired therapeutic effect, i.

Beta1 integrin deficiency impairs migration and differentiation of mouse embryonic stem cell derived neurons.

Cell-matrix interaction plays an important role during neuronal development, which is demonstrated by comparing wild type (D3)- and beta1 integrin-deficient (G201) embryonic stem cell derived neurons. In D3 preparations complex networks of functionally coupled neurons with bi- and multipolar morphologies develop. In contrast, neuronal differentiation is retarded in G201 derived neurons, recognised by limited migration and restricted morphological differentiation.

Temporospatial relationships between macroglia and microglia during in vitro differentiation of murine stem cells.

Embryonic stem (ES) cells of the permanent line BLC6 derived from a 129/Sv Gat mouse blastocyst were differentiated as spheroid aggregates (embryoid bodies, EBs) in the presence of retionic acid. After 2 days in suspension, EBs were plated on gelatine-coated glass coverslips and cultivated for 5, 9, and 16 days post plating (DPP) in normal medium. In this study we investigated whether the well-known retinoic acid-induced differentiation of ES cells into neurons (identified by immunostaining for neuron-specific enolase and synaptophysin) was accompanied by cells expressing astroglial (GFAP), oligodendroglial (O4), and microglial (5C6, galectin-3) markers.

Somatic embryogenesis of Prunus subhirtella autumno rosa and regeneration of transgenic plants after Agrobacterium-mediated transformation.

Embryogenic lines of Prunus subhirtella autumno rosa were established on a modified MS medium supplemented with 1 mg/l NAA, 0.06 mg/l IBA and 0.04 mg/l BA from petioles of axenically grown shoots of adult origin.