From the outset, Pisa has been met with scepticism, criticism and even outrage, most of which has stemmed from the claim that the study's findings are arbitrary.
Discontent has also been stoked by high unemployment, which has stemmed in part from the surge in the Arab world's young population.
In addition, a very weak D′ band is present at ca. 1,600 cm−1 as a shoulder of the G band, which has stemmed from the dangling band of disorder graphite.
Simultaneously, contraction of fibrotic lesions, which had stemmed from inflammation within the choroid, drew the overlying retinal tissues backward.
Moreover, in ES cells glucose availability and acetyl-CoA production can also influence epigenetics by regulating the cytosolic acetyl-CoA pool available for histone acetylation reactions [122, 123], raising the possibility that such mechanisms might be operable in cancer and particularly in cancer initiating cells, which have stem cell-like properties.
The markers used to enrich for potential prostate stem cells have also been used to enrich cells which have stem cell properties in other epithelial tissues, including brain (CD133 (Singh et al, 2003)), mammary gland (CD133 (Tsujimura et al, 2007)); CD49f (Stingl et al, 2006) and lung (Sca1, (Kim et al, 2005)), suggesting significant common features between stem cells of different tissues.
Such behavior may be relevant to the early steps of oncogenesis driven by tumor-initiating cells, which have stem cell-like properties (Reya et al, 2001), as in the case of carcinoma, glioma and leukemia caused by sustained Hh signaling (Clement et al, 2007; Zhao et al, 2009; Youssef et al, 2012).
Recent studies revealed that CoCC derives from HPC, which has stem cell features and can differentiate into both hepatocytes and cholangiocytes [1, 3].
Another example of this type of ectosymbiosis comes from the Macaranga tree, which has stems adapted to house colonies of Crematogaster ants.
B2 RNA, which has stem-loops and unstructured single-stranded regions, represses transcription of mRNA in response to various stresses, including heat shock in mouse cells.
Most importantly, we found that a small subset of the precursors which have stem cell activity were maintained in the HD hippocampus but were not found in the hippocampus of WT littermates.
