Search results
Results From The WOW.Com Content Network
Morphogenesis of Drosophila fruit flies is intensively studied in the laboratory. A morphogen is a substance whose non-uniform distribution governs the pattern of tissue development in the process of morphogenesis or pattern formation, one of the core processes of developmental biology, establishing positions of the various specialized cell types within a tissue.
These factors can be excitatory or inhibitory. There are a few families of factors that are very important in embryo development including fibroblast growth factor secreted them. [1] Juxtacrines (juxta = near) are local hormones that require close contact and act on either the cell which emitted them or on adjacent cells. [5]
Cell growth refers to an increase in the total mass of a cell, including both cytoplasmic, nuclear and organelle volume. [1] Cell growth occurs when the overall rate of cellular biosynthesis (production of biomolecules or anabolism) is greater than the overall rate of cellular degradation (the destruction of biomolecules via the proteasome, lysosome or autophagy, or catabolism).
Auxin diffuses along the shaded side of the plant, and causes cellulose in the cell wall to break, allowing turgor (water pressure) to expand the cell. Growth of cells contributes to the plant's size, unevenly localized growth produces bending, turning and directionalization of organs- for example, stems turning toward light sources ...
A growth factor is a naturally occurring substance capable of stimulating cell proliferation, wound healing, and occasionally cellular differentiation. [1] Usually it is a secreted protein or a steroid hormone .
Additionally, paracrine signaling of Fgf is essential in the developing eye of chicks. The fgf8 mRNA becomes localized in what differentiates into the neural retina of the optic cup. These cells are in contact with the outer ectoderm cells, which will eventually become the lens. [4] Phenotype and survival of mice after knockout of some FGFR ...
But cells on their own in the lab aren't the same as cells in a human patient, and the researchers don't know if the process can be worked into any cancer treatments yet. They've published their ...
Localized cell divisions in the Pericycle give rise to the lateral root primordia. This pattern of growth gives rise to a bundle of tissue. The subsequent accumulation of cell division and enlargement in this bundle of tissue gives rise to a new structure known as the root primordium. [15]