Cell

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CELL. A small room in a prison. See Dungeon.

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Although the full set of instructions, i.e., the microbioprogram carried in the zygote, is intact all through the ontogenetic differentiation process and is transferred from the parent to the daughter cells during cell divisions, the resulting cells are not structurally and functionally identical.
These data indicate that high temperatures during the endosperm cell division stage were detrimental to both genotypes studied, although the effects were more pronounced in Mo17.
As cell division proceeded, the chromosomes doubled in number.
The scientists disrupted both the enzymes in cancer cells and found that the cells' telomeres shrunk with every round of cell division, eventually disappearing altogether.
This study also points to a better understanding of how cancer cells manage to sustain rapid cell division without triggering cell death.
Plants are able to switch cell division on and off in a very controlled way and that makes their growth very flexible and enables them to adapt so well to different environments.
That shorter form is in higher levels in cancer cells as well as fetal tissue, both of which require accelerated cell division. But the scientists also have shown that very high levels of Chk1-S actually reduce tumor growth and prompt premature cell division and death in other cells.
Hair loss occurs primarily due to a by product of testosterone (DHT) and over time, energy is drawn away from the dermal matrix resulting in less frequent cell division. With fewer keratinised cells the hair then becomes thinner and finer until cellular division/hair growth stops completely.
In stem cells and in most cancerous cells, however, telomerase is active, and the telomeres do not shorten during cell division, allowing the cells to remain effectively immortal.
Cell division occurs millions of times each day in the human body.
Timeless also appeared to play a role in the DNA damage checkpoint response, a process that arrests cell division and activates DNA repair mechanisms.
While the precise cause of psoriasis is unknown, it is thought to be triggered by an immune system defect leading to excessive skin cell division. Severity varies, with around 75% of psoriasis cases classified as "mild to moderate," and the remainder classified as "moderate to severe." Topical therapies are first-line treatments for mild to moderate cases of the disease.

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