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n. pl. blas·te·mas or blas·te·ma·ta (-mə-tə)
1. A mass of undifferentiated cells from which an organ or a body part develops, either in normal development or in the regeneration of a lost body part.
2. A structureless substance from which it was formerly believed that cells are formed.

[Greek blastēma, offspring, sprout, from blastos, bud.]

blas·te′mal, blas′te·mat′ic (blăs′tə-măt′ĭk), blas·te′mic (blă-stē′mĭk) adj.


(blæˈstiːməl) or


(Biology) of or relating to blastema
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Adj.1.blastemal - of or relating to blastemata
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References in periodicals archive ?
Pathologically, Classical Wilms' tumour has triphasic histology, with components of blastemal, epithelial, and stromal structures, as found in our case.
10) For example, both PAX2 and PAX8 are abundantly expressed by renal blastemal cells during nephrogenesis, then are noted in only a few renal parenchymal cells in mature kidney, but are identified again in RCC.
MPS1 defines a proximal blastemal proliferative compartment essential for zebrafish fin regeneration.