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Blastema |
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blastema [bla′stēma]
(embryology) A mass of undifferentiated protoplasm capable of growth and differentiation. Blastema in the study of regeneration, the accumulation of homogeneous, nonspecialized cells on the surface of a wound after amputation of an organ. Tissues of the organ that is being restored are formed from blastemas in the course of regeneration. In embryology: (1) a group of cells from which a new individual develops by asexual reproduction in some multicellular animals (Coelenterata, worms, Ascidia, and others); (2) the surface layer of cytoplasm in the cen-trolecithal ova of many arthropods. By means of fine outgrowths the blastema is connected to the cytoplasm, which surrounds the nucleus situated in the center of the ovum. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | They grafted that tissue onto normal axolotls, then cut away some of it and observed what happened to the signature "green" cells as the blastema area regenerated. Byline: ANI Washington, March 27 (ANI): Scientists at the Pentagon have completed the first phase of their plan to regrow soldiers' limbs, by turning human skin into the equivalent of a blastema - a mass of undifferentiated cells that can develop into new body parts. The most unusual-looking ones are ATLANTES, male figures supporting columns, and BLASTEMA, a mass of embryonic cells ["Some More Quality 8-Squares," Richard Sabey, WW, Aug 1995]. |
Blastema |
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