Sentence examples for marks are maintained from inspiring English sources
All sequences specific to genes imprinted in humans were individually reviewed to determine whether they have been reported as belonging to a DMR for which parent of origin marks are maintained by DNA methylation [59] [81].
After fertilization, these marks are maintained.
Additionally, after DNA replication is completed, epigenetic chromatin marks are maintained on the replicated sister chromatids.
Fourth, although a basic premise of epigenetic processes was that, once established, these marks were maintained through rounds of mitotic cell division and stable for the life of the organism, several recent studies have shown that at some loci the epigenetic state can be altered by the environment [36].
Similar to what was observed in terminally differentiated cells derived from male embryos carrying a Tsix-truncated allele [ 15], we show in this report that such an accumulation of active chromatin marks is maintained, or even increased, during differentiation of Tsix-truncated cells (Additional file 4), correlating with Xist transcription upregulation [ 8, 12].
This mark is maintained at the break site until the break is repaired [ 18, 21].
Immunostaining against H3K27me3 in fixed GVs containing transplanted MEF nuclei revealed that the mark is maintained on the Xi of transplanted nuclei 3 days after nuclear transfer.
These centers display specific and robust epigenetic marks, which are maintained through many cell cycles [18].
Interestingly, marks such as H3K27me3 and H2AK119ub are maintained even though the enrichment of PRC2 and PRC1 complexes are no longer detectable by IF (de Napoles et al. 2004; Silva et al. 2003).
Other epigenetic marks can be maintained for many cell divisions.
