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Differentiation happens multiple times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some ...
The concept of cell autonomous sex identity (CASI) emerged as a challenge to the traditional understanding of sexual differentiation, which largely centered around the role of gonadal hormones in directing the development of sex-specific traits.
At the two cell stage, the anterior cell is the AB cell while the posterior cell is the P1 cell. The dorsal/ventral axis of the animal is set by a random position of cells during the four cell stage of the embryo. The dorsal cell is the ABp cell while the ventral cell is the EMS cell. Localization of cytoplasmic determinants
DIF-2 is unrelated to DIFs -1 and -3, but it works 40% as well as DIF-1 does to induce differentiation in stalk cells. Despite this similarity in function during differentiation, DIFs -1 and -2 act very differently in chemotactic movement of the cells toward cAMP. DIF-1 has a slight inhibitory effect on movement of starved cells toward cAMP ...
Embryonic stem cells exhibit dramatic and complex alterations to both global and site-specific chromatin structures. Lee et al. performed an experiment to determine the importance of deacetylation and acetylation for stem cell differentiation by looking at global acetylation and methylation levels at certain site-specific modification in histone sites H3K9 and H3K4.
Cell division can occur without cell growth, producing many progressively smaller cells (as in cleavage of the zygote), while cell growth can occur without cell division to produce a single larger cell (as in growth of neurons). Thus, cell proliferation is not synonymous with either cell growth or cell division, despite these terms sometimes ...
Involves in epithelial cell maturation as well as goblet and Paneth cell differentiation. Required for the small intestinal identity during development. In IEC-6 cells, conditional expression induced enterocyte and goblet like cells: 21081128 [13] 19386267 [14] 8552090 [15] CTNNB1: Catenin, beta: Paneth cell differentiation.
The cell cycle is a series of complex, ordered, sequential events that control how a single cell divides into two cells, and involves several different phases. The phases include the G1 and G2 phases, DNA replication or S phase, and the actual process of cell division, mitosis or M phase. [ 1 ]
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