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  Encyclopedia of Keywords > Humans > Medicine > Anatomy > Tissues > Mesoderm   Michael Charnine

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  1. The mesoderm is a complex array of tissue-types in three primary domains: dorsal, ventrolateral, and ventral.
  2. Mesoderm is one of the three primary germ layers of a vertebrate embryo. (Web site)
  3. Mesoderm is one of three principal germinal layers of cells that are formed in early in embryonic development. (Web site)
  4. The mesoderm is one of the three germ layers in the early developing embryo, the other two layers being the ectoderm and the endoderm. (Web site)

Mesoderm Induction

  1. Reilly, K. M., and Melton, D.A. (1996). The role of short-range and long-range signaling in mesoderm induction and patterning during Xenopus development.
  2. The messengers encoding the BMPs are not localized in the vegetal hemisphere, which casts some doubt on their role in mesoderm induction. (Web site)

Gives Rise

  1. The mesoderm that develops as gonadal stroma gives rise to the sex cord-stromal tumors of the ovary and testis (e.g.
  2. The mesoderm gives rise to all the tissues inbetween (mesenchyme). (Web site)


  1. During gastrulation, some of the cells migrating inward contribute to the mesoderm, an additional layer between the endoderm and the ectoderm. (Web site)
  2. Gastrulation produces an embryo composed of three layers of cells, the endoderm, the mesoderm, = and the ectoderm. (Web site)
  3. Radial cleavage and derivation of mesoderm from the endodermal cells lining the archenteron are presumably ancestral conditions for bilaterians. (Web site)


  1. The mesoderm then divides into two layers, the space between them being called the coelom, or body cavity.
  2. In many animals, including vertebrates, the mesoderm surrounds a cavity known as the coelom, the space that contains the viscera. (Web site)


  1. Mesoderm arises from cells that introgress into the blastocel or (in stenolemates) are pinched off the blastula. (Web site)
  2. - mesoderm (Cell Biology) - Encyclopedia At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball. (Web site)

Xenopus Embryos

  1. Paraxial-fated mesoderm is required for neural crest induction in Xenopus embryos. (Web site)
  2. Whitman, M. and Melton, D.A. (1989). Induction of mesoderm by a viral oncogene in early Xenopus embryos.
  3. Hemmati-Brivanlou, A. and Melton, D.A. 1992. A truncated activin receptor inhibits mesoderm induction and formation of axial structures in Xenopus embryos. (Web site)

Presomitic Mesoderm

  1. Inhibition was more pronounced around S-Fz7-expressing cells injected in the caudal and middle presomitic mesoderm (shown here). (Web site)
  2. Simple animals, such as sponges, lack a mesoderm.
  3. Intermediate mesoderm Transverse section of a chick embryo of forty-five hours--- incubation.
  4. EMT is essential for numerous developmental processes including mesoderm formation and neural tube formation.
  5. Noggin, expressed in the lateral region of the rostral presomitic mesoderm and the newly formed somites, is likely to release Bmp inhibition. (Web site)

Vegetal Explants

  1. Ciruna B, Rossant J : FGF signaling regulates mesoderm cell fate specification and morphogenetic movement at the primitive streak.
  2. In all of these cases, no expression of mesoderm markers was detected in the vegetal explants.
  3. XNkx-2.5 is also expressed in the gut mesoderm, localized to the region surrounding the duodenum.
  4. This ths pattern is maintained during mesoderm invagination and the rapid phase of germ-band elongation ( Fig. (Web site)
  5. We also examined whether it was possible to isolate vegetal explants from later stages that were devoid of mesoderm.


  1. As we have discussed, noggin is expressed in the organizer and can dorsalize ventral mesoderm. (Web site)
  2. Ectopic expression of GSK3, which inhibits -catenin-mediated Wnt signaling, also induced cardiogenesis in ventral mesoderm. (Web site)
  3. Here we report that the Wnt antagonists Dkk-1 and Crescent can induce heart formation in explants of ventral marginal zone mesoderm. (Web site)
  4. In the chick, anterior endoderm produces Wnt antagonists that signal to anterior mesoderm to promote heart development over blood development.

Connective Tissue

  1. The mesoderm around the tubules becomes condensed to form the connective tissue of the kidney. (Web site)
  2. The urinary and reproductive organs are developed from the intermediate mesoderm.
  3. Bone, connective tissue, muscle, blood, vascular and lymphatic tissue, and the pleurae of the pericardium and peritoneum are all derived from the mesoderm. (Web site)
  4. The notochord arises as a pouch from the mesoderm. (Web site)


  1. Inhibition of Wnt activity induces heart formation from posterior mesoderm. (Web site)
  2. These determinations demonstrated that anterior, but not posterior, endoderm effected differentiation of anterior mesoderm. (Web site)

Dorsal Mesoderm

  1. The misexpression of Ths in the mesoderm causes a substantial expansion in the dorsal mesoderm and the number of Eve-expressing cells.
  2. Thus, endogenous induction of dorsal mesoderm is not inhibited, and a role for activin in dorsal mesoderm induction is not supported by these results. (Web site)
  3. Last check: 2007-11-07) of mesoderm in vertebrates (Schier and Shen, 2000). (Web site)
  4. We found two molecules that function as mesoderm inducers, ActrIIb, and Fgf8f. (Web site)
  5. These results may also indicate that follistatin is involved in patterning of the mesoderm. (Web site)


  1. Each kidney originate as an ureteric bud from the caudal end of the Wolffian duct, which, in turn, originates from intermediate mesoderm.
  2. The mesoderm, consisting of the mesenchyme cells that have proliferated in the blastocoel, will become all the other internal organs.
  3. The vertebrate limb bud consists of a core of l oose mesenchymal mesoderm covered by an epithelial ectodermal layer. (Web site)
  4. Mesoderm comprises the middle germinal layer that lies between the ectodermal and endodermal layers.


  1. All higher animals (from flatworms to man) are triploblastic, having in addition a mesoderm. (Web site)
  2. Triploblastic is a condition of the ovum in which there are three primary germinal layers: the ectoderm, mesoderm, and endoderm.
  3. The germ layer mesoderm forms in the embryos of animals more complex than cnidarians, making them triploblastic.
  4. Mesoderm, as a bona fide germ layer, is the distinctive trait of triploblastic animals. (Web site)


  1. The hypoblast forms next to the YSL and will form a mixture of endoderm and mesoderm.
  2. Ingression of these cells results in formation of the mesoderm and replacement of some of the hypoblast cells to produce the definitive endoderm. (Web site)


  1. Interaction of goosecoid and brachyury in Xenopus mesoderm patterning.
  2. Technau, U. 2001. Brachyury, the blastopore, and the evolution of the mesoderm.
  3. The expression of Xwnt8 in non-dorsal mesoderm was inhibited throughout the marginal zone by VP16-FoxD3 ( Fig. (Web site)


  1. Three different configurations of mesoderm in relation to ectoderm form a method of categorizing animals.
  2. In animal development, organogenesis is the process by which the ectoderm, endoderm, and mesoderm develop into the internal organs of the organism.
  3. Later, dpERK staining is restricted to the leading edge of the mesoderm as it spreads into the dorsal ectoderm. (Web site)
  4. Cross-section of Planaria showing three tissue layers: epidermis (ectoderm), muscle (mesoderm), and lining of digestive tract (endoderm). (Web site)
  5. In principle, this putative FGF gradient could provide a precise guidance cue for the coordinated spreading of the mesoderm into the dorsal ectoderm. (Web site)

Germ Layers

  1. In triploblastic organisms, the three germ layers are called endoderm, ectoderm and mesoderm.
  2. The epiblast, now called primitive ectoderm will give rise to all three germ layers of the embryo: ectoderm, mesoderm, and endoderm. (Web site)

Paraxial Mesoderm

  1. How these patterning mechanisms generate a segmental pattern within the paraxial mesoderm is a fundamental question in vertebrate embryology. (Web site)
  2. Mesoderm beside the notochord (axial mesoderm) thickens, forming the paraxial mesoderm as a pair of strips along the rostro-caudal axis. (Web site)
  3. Activation of different myogenic pathways: myf-5 is induced by the neural tube and MyoD by the dorsal ectoderm in mouse paraxial mesoderm. (Web site)

Third Layer

  1. Animals with bilateral symmetry produce a third layer in-between called mesoderm, making them triploblastic.
  2. A third layer, the mesoderm, is formed between the other two by growth of cells derived from a marginal zone. (Web site)


  1. The thick plate of epithelium extends deeply, pushing before it the mesoderm and forming a distinct projection.
  2. Intermediate mesoderm is a type of mesoderm that is located between the paraxial mesoderm and the lateral plate.
  3. What does lateral plate mesoderm develop into.


  1. Body cavity is not completely lined with mesoderm. (Web site)
  2. In addition to the mesenchyme, the mesoderm is capable of creating lumen or cavities lined by specialized mesodermal epithelium.


  1. Outpocketings of the archenteron (primitive gut) of the gastrula which form the mesoderm al somite s later in development.
  2. High-throughput functional screen of mouse gastrula cDNA libraries reveals new components of endoderm and mesoderm specification -- Chiao et al. (Web site)
  3. Injected embryos were examined at gastrula stage by in situ hybridization with endoderm or mesoderm markers. (Web site)

Developing Embryo

  1. Endoderm The endoderm is one of the three germ layers of the developing embryo, the other two being the ectoderm and the mesoderm.
  2. Columbia Encyclopedia mesoderm, in biology, middle layer of tissue formed in the gastrula stage of the developing embryo.


  1. The formation of a mesoderm led to the formation of a coelom. (Web site)
  2. Mesoderm forms the middle layer. (Web site)
  3. The coelom of the body forms from a split of the mesoderm along the somite axis.
  4. The mesoderm forms: skeletal muscle, skeleton, dermis of skin, connective tissue, urogenital system, heart, blood (lymph cells), and spleen. (Web site)
  5. The mesoderm forms the somites, the notochord, and the mesenchyme. (Web site)

Middle Layer

  1. The middle layer, or mesoderm, gives rise to the muscles, skeleton and blood system. (Web site)
  2. The middle layer is termed the mesoderm, and the outermost layer is called the ectoderm. (Web site)
  3. The inner layer of the cup is the endoderm; the outer layer is the ectoderm ; a middle layer, the mesoderm, forms from a marginal zone. (Web site)


  1. Next, he discusses why the invertebrate mesoderm does not show the same regional subdivision as vertebrate mesoderm.
  2. Functional subdivision of trunk visceral mesoderm parasegments in Drosophila is required for gut and trachea development -- Hosono et al. (Web site)


  1. Humans > Medicine > Anatomy > Tissues
  2. Encyclopedia of Keywords > Nature > Life > Animals
  3. Glossaries > Glossary of Developmental Biology /

Related Keywords

    * Mesodermal Layers
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  Originally created: February 19, 2008.
  Links checked: January 18, 2013.
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