This is because these punctuation marks carry space above them, which, when added to the adjacent standard word spaces, combines to create a visually larger space.
The recent confirmation of the presence of both cytosine methylation and hydroxymethylation in mammalian mtDNA (Shock et al. 2011) suggests the possibility that the suppressor might be an epigenetic mark carried in the mitochondrial genome rather than the mtDNA sequence itself.
The second, and more fundamental, question is whether the copying mechanism is correct, and, if so, does the ability to transmit and copy the mark carry the memory of the silenced state?
A study in which human assessors were asked to rate the perceptibility of sink marks was carried out to prove the significance of the proposed model in terms of correspondence to the human vision.
To identify in vivo histone Kbz marks, we carried out proteomic analysis using histone proteins extracted from HepG2 and RAW cells that were treated with 5 mM of SB.
That evidence of manufacture was not confined to the works themselves: friends and art critics observed the injuries and marks she carried as a result of working with such unforgiving material.
