neoblast


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neoblast

[′nē·ə‚blast]
(invertebrate zoology)
Any of various undifferentiated cells in annelids which migrate to and proliferate at sites of repair and regeneration.
References in periodicals archive ?
By homology, we believe that the upregulation of IL-1-like molecules in the hyperplasic ovary may induce the proliferation of neoblasts and their differentiation in oogonia, but may inhibit their maturation, causing the pathology of infertility.
mediterranea to radiation, which killed the worms' neoblasts while leaving other types of cells unharmed.
Sanchez' colleague Phillip Newmark has kept planarian neoblasts alive in petri dishes for several weeks, an advance the researchers hope will allow them to genetically alter the animals.
They also knew that in uninjured planarians, neoblasts maintain tissues that undergo normal wear and tear over the worm's lifetime.
Following this hunch, and using what they knew about planarian neoblasts, post-doctoral fellow Jim Collins, Newmark, and their colleagues hunted for similar cells in Schistosoma mansoni, the most widespread species of human-infecting schistosomes.
The cells we found in the schistosome look remarkably like planarian neoblasts.
Using complementary methods, Reddien and graduate students Dan Wagner and Irving Wang demonstrated that adult planarians not only possess pluripotent stem cells known as clonogenic neoblasts (cNeoblasts), a single such cell is capable of regenerating an entire animal.
By labeling cells for a gene expressed only in neoblasts, Wagner observed that these individual surviving cNeoblasts divided to form large colonies of cells.
energy reserves or number of neoblasts available) or lack of a mouth.