| 释义 |
blastemaenUK
blas·te·ma B0314700 (blă-stē′mə)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.blastema (blæˈstiːmə) n, pl -mas or -mata (-mətə) (Physiology) a mass of undifferentiated animal cells that will develop into an organ or tissue: present at the site of regeneration of a lost part[C19: from New Latin, from Greek: offspring, from blastos bud] blastemic adjblas•te•ma (blæˈsti mə)
n., pl. -mas, -ma•ta (-mə tə) an aggregation of cells in an early embryo capable of differentiation into specialized tissue and organs. [1840–50; < New Latin < Greek blástēma (blastē- variant s. of blasteîn to sprout + -ma n. suffix of result)] blas•te′mal, blas•te•mat•ic (ˌblæs təˈmæt ɪk) blas•te′mic (-ˈsti mɪk, -ˈstɛm ɪk) adj. Thesaurus| Noun | 1. | blastema - a mass of undifferentiated cells from which an organ or body part developscell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals |
TranslationsBlastemaenUK
blastema[bla′stēma] (embryology) A mass of undifferentiated protoplasm capable of growth and differentiation. anlage 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. blastemaenUK
blastema [blas-te´mah] 1. in species with reproduction" >asexual reproduction, a group of cells that give rise to a new individual.2. in other species, a group of cells that gives rise to an organ or part in either normal development or regeneration.blas·te·ma (blas-tē'mă), 1. The primordial cellular mass (precursor) from which an organ or part is formed. 2. A cluster of cells competent to initiate the regeneration of a damaged or ablated structure. [G. a sprout] blastema (blă-stē′mə)n. pl. blaste·mas or blaste·mata (-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.
blas·te′mal, blas′te·mat′ic (blăs′tə-măt′ĭk)(blă-stē′mĭk), blas·te′mic (blă-stē′mĭk) adj.blastema A group of cells in a multicellular organism which are capable of developing into a new individual by asexual reproduction or into tissues and organs by regeneration.blas·te·ma (blas-tē'mă) 1. The primordial cellular mass (precursor) from which an organ or part is formed. 2. A cluster of cells competent to initiate the regeneration of a damaged or ablated structure. [G. a sprout]blastema an undifferentiated mass of animal cells that later forms a structure or organ either embryologically or through regeneration, e.g. the head of a flatworm.blastemaenUK
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