triploblastic


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trip·lo·blas·tic

(trip'lō-blas'tik),
Formed of three primary germ layers (ectoderm, mesoderm, endoderm), or containing tissue derived from all three layers.
[G. triploos, threefold, + blastos, germ]
Farlex Partner Medical Dictionary © Farlex 2012

triploblastic

(trĭp′lō-blăs′tĭk)
adj.
Having body tissues derived from three germ layers, the endoderm, mesoderm, and ectoderm, seen in all multicellular animals except certain invertebrates such as the cnidarians and sponges.

trip′lo·blas′ty n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

triploblastic

Of an embryo, having three primitive germ layers from each of which particular parts of the body develop.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

triploblastic

having three primary embryonic cell layers, ECTODERM, MESODERM and ENDODERM. All animals except PROTOZOANS, SPONGES and COELENTERATES are triploblastic.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
This supports the early observations of Krasinska (1914) and Claus (1878) and provides further evidence that cnidarians possess some triploblastic properties.
marsupialis display a muscular organization that is suggestive of a triploblastic form that could represent an intermediate evolutionary stage between diploblasty and triploblasty.
These reciprocal tBLASTn searches produced clear evidence for protostome syndecan and tenascin, suggesting that these ECM proteins may have evolved on the triploblastic stem lineage.
Characterizing the molecular stress-response repertoire of Nematostella can be informative at four levels: (1) comparisons to triploblastic animals and non-animal models will help us to reconstruct the early evolution of stress-response pathways; (2) comparisons to species with narrower environmental tolerances, especially closely related marine anemones, will help us to understand the genomic basis for Nematostella's hardiness and ability to survive in estuarine habitats; (3) comparisons among genetically and phenotypically distinct populations of the starlet sea anemone can reveal the microevolution of stress-response pathways; and (4) identifying molecular markers of stress will augment our ability to utilize Nematostella and other Cnidaria as environmental sentinels.
Comparing the genomic complement of stress genes in Nematostella and Triploblastica will help illuminate the stress-response system of early animals, perhaps revealing the importance of transcriptional control, a primary difference between stress-response pathways in triploblastic animals and other eukaryotes (e.g., Roelofs et al, 2008).
The grouping of the dicyemids with the triploblastic animals was supported by a bootstrap value of 100% in both the neighbor-joining (Fig.
To corroborate the inclusion of the dicyemids in the triploblastic lineage, we analyzed subsets of taxa shown in the present paper as well as several different sets of taxa including some of the following species (the accession numbers for 18S rDNA data are shown in parentheses): Cryptomonas phi (X57162).
The present molecular phylogenetic study based upon comparisons of nucleotide sequences of 18S rDNA shows that triploblastic animals form a monophyletic assemblage within the metazoan subtree and that the dicyemid mesozoa are an ingroup of the monophyletic unit of triploblastic animals.
These sequence data do not firmly establish the position of the dicyemids within the triploblastic assemblage.
Triploblastic phyla are poorly resolved in the molecular phylogenetic trees of 18S rDNA; i.e., nodes defining phyla are not supported by high bootstrap values.