MAGDEBURG, Germany - A bus carrying senior citizens collided with a truck in eastern Germany on Monday and plunged down an embankment, killing 13 people, authorities said.

By Noah Barkin MAGDEBURG, Germany (Reuters) - A grinning Gerhard Schroeder leapt onto a giant stage in this 1,200-year-old German city on the River Elbe this week to thumping music and applause from several thousand Social Democratic (SPD) supporters.

Abstract Standardized sample preparation procedures constitute a prerequisite for obtaining reliable and reproducible results in gene expression research in humans.