Interestingly, such a daily regulation of cell divisions is observed in certain types of tissues including tongue epithelium, intestinal epithelium, and skin [12] [14], implying that the temporal regulation of progenitor divisions seems to be important for animals living under day/night cycles.
Circadian gated cell divisions are observed in nearly all organisms.
Finally, as expected the vast majority of cell divisions was observed in the cambium.
In addition, our findings indicate that Hlx1 may also positively influence EC proliferation, because a decrease in cell divisions was observed in the ISVs of hlx1 morphant embryos.
Interestingly, the mitotic activity of root tips was not reduced in the presence of Na2SeO4 (Fig. 1a, c); however, the significant reduction of the number of divisions was observed in the presence of Se(IV) (Fig. 1b).
The ability of fast neutron and UV-B radiation to exert genotoxic action on PMCs DNA in 1st and 2nd meiotic divisions was observed in spite of long period of recovery (Table 1) and–(8)).
Similar findings of asymmetric cell division were observed in doxorubicin-treated LA-N-5 cultures.
It is relevant to notice that cells in final phases of mitotic division were observed in greater frequency in control cells rather than in chrysotile treated cells.
Additional analysis of earlier time windows could potentially be informative, since they noted a rise in tubular proliferation starting at 12 h post-injury [ 129], and similar rapid escalations in division were observed in studies of rat ischaemic injury [ 130].
Cell division was observed in mushroom bodies, primarily at the start of metamorphosis, exhibiting temporal differences among workers, queens and males.
Even at the lowest infection density, +inv+llo S. elongatus division was observed in approximately 1% of cells tracked with time-lapse microscopy (figure 6F).
