Cells As Building Blocks
Tissue engineering utilizes living cells as engineering materials. Examples include using living fibroblasts in skin replacement or repair, cartilage repaired with living chondrocytes, or other types of cells used in other ways.
Cells became available as engineering materials when scientists at Geron Corp. discovered how to extend telomeres in 1998, producing immortalized cell lines. Before this, laboratory cultures of healthy, noncancerous mammalian cells would only divide a fixed number of times, up to the Hayflick limit.
Read more about this topic: Tissue Engineering
Famous quotes containing the words cells, building and/or blocks:
“The twelve Cells for Incorrigibles ... are also carved out of the solid rock hill. On the walls of one of the cells human “liberty” is clearly inscribed, with the “liberty” in significant quotation marks.”
—Administration in the State of Ariz, U.S. public relief program (1935-1943)
“The artist must be an egotist because, like the spider, he draws all his building material from his own breast. But just the same the artist alone among men knows what true humility means. His reach forever exceeds his grasp. He can never be satisfied with his work. He knows when he has done well, but he knows he has never attained his dream. He knows he never can.”
—Rheta Childe Dorr (1866–1948)
“The quest for certainty blocks the search for meaning. Uncertainty is the very condition to impel man to unfold his powers.”
—Erich Fromm (1900–1980)