… lower expression of lineage-affiliated genes, reduced prevalence at promoters of the repressive
histone modification H3K27me3, and fewer bivalent domains, which are thought to mark …

Polycomb repressive complex 2 (PRC2) is a multisubunit protein complex essential for the
development of multicellular organisms. Recruitment of PRC2 to target genes, followed by …

Focusing on school leadership relations between principals and teachers, this study examines
the potential of their active collaboration around instructional matters to enhance the …

Although student engagement with the intellectual work of school is important to students'
achievement and to their social and cognitive development, studies over a span of two …

Professional community among teachers, the subject of a number of recent major studies, is
regarded as an ingredient that may contribute to the improvement of schools. The research …

School reform efforts have focused on the development of professionally enriching work
groups for teachers as a vehicle for improving student achievement. This study examines the …

… Each of these developments has left its mark on this book. Yet sociologists have focused
almost exclusively on science's heartland, the laboratory, largely ignoring the domain of the …

Reform efforts may increase active learning without enhancing the intellectual quality of
students' work. We present a vision of authentic academic achievement and specific standards …

… An important characteristic for their use as biomarker is that epigenetic marks, in particular
DNA methylation, are known to survive sample storage conditions reasonably well [63, 64]. …

Trimethyl-lysine (me3) modifications on histones are the most stable epigenetic marks and
they control chromatin-mediated regulation of gene expression. Here, we determine proteins …