Tissues and Organs
"Regenerative strategies include the rearrangement of pre-existing tissue, the use of adult somatic stem cells and the dedifferentiation and/or transdifferentiation of cells, and more than one mode can operate in different tissues of the same animal. All these strategies result in the re-establishment of appropriate tissue polarity, structure and form." During the developmental process genes are activated that serve to modify the properties of cell as they differentiate into different tissues. Development and regeneration involves the coordination and organization of populations cells into a blastema, which is "a mound of stem cells from which regeneration begins." Dedifferentiation of cells means that they lose their tissue-specific characteristics as tissues remodel during the regeneration process. Transdifferentiation of cells is when they lose their tissue-specific characteristics during the regeneration process, and then re-differentiate to a different kind of cell.
Read more about this topic: Regeneration (biology)
Famous quotes containing the word organs:
“But the man and woman of seventy assume to know all, they have outlived their hope, they renounce aspiration, accept the actual for the necessary and talk down to the young. Let them then become organs of the Holy Ghost; let them be lovers; let them behold truth; and their eyes are uplifted, their wrinkles smoothed, they are perfumed again with hope and power.”
—Ralph Waldo Emerson (1803–1882)