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Topics related to "Gastrula"

endoderm
endoderm , in biology, inner layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball. Cell movement results in an invagination of the bottom region, or vegetal hemisphere, of the embryo so ... Read more
differentiation
differentiation in biology, series of changes that occur in cells and tissues during development, resulting in their specialization. This, in turn, permits a greater variety of organisms. In plants, unspecialized cells, composing tissue called meristem , differentiate into vascular tissue (xylem a... Read more
Ernst Heinrich Haeckel
Ernst Heinrich Haeckel , 1834-1919, German biologist and philosopher. He taught (1862-1909) at the Univ. of Jena. An early exponent of Darwinism in Germany, he evolved a mechanistic form of monism based on his interpretation of Darwin's theories and set forth in his speculative popular works on sc... Read more
mesoderm
mesoderm in biology, middle layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball. Continued cell movement results in an invagination of the bottom region of the embryo, producing a form... Read more
embryo
embryo , name for the developing young of an animal or plant. In its widest definition, the embryo is the young from the moment of fertilization until it has become structurally complete and able to survive as a separate organism. Embryology, the scientific study of embryonic development, deals wi... Read more

Encyclopedia entries related to "Gastrula"

Hans Spemann
Encyclopedia entry from: Encyclopedia of World Biography ...Spemann then experimented on the amphibian gastrula, the early embryo consisting of undifferentiated...frequently transplanted minute pieces of the gastrula from one area of its surface to another...stage, while all other cells in the gastrula were still undifferentiated. Further...
mesoderm
Book article from: The Columbia Encyclopedia, Sixth Edition mesoderm in biology, middle layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball...
endoderm
Book article from: The Columbia Encyclopedia, Sixth Edition endoderm , in biology, inner layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball...
Ernst Heinrich Haeckel
Book article from: The Columbia Encyclopedia, Sixth Edition ...illustrated by his gastraea theory, wherein he postulated a hypothetical ancestral form (gastraea) represented by the gastrula stage of individual development. He is known also for his study of invertebrate marine organisms, especially the Radiolaria...
embryo
Book article from: The Columbia Encyclopedia, Sixth Edition ...of the ovum was located; this results in an invagination (inpushing) of these cells to form a ball two cells thick (the gastrula). The new cavity thus formed is the gastrocoel, also known as the primitive gut or archenteron, and its opening is the...
differentiation
Book article from: The Columbia Encyclopedia, Sixth Edition ...phloem; see wood ), supportive tissue (sclerenchyma), and storage tissue (parenchyma). In animals, the tissues of the gastrula stage of the embryo differentiate into specialized tissues. While it is not fully understood what initiates this processs...

Dictionary entries related to "Gastrula"

gastrula
Book article from: A Dictionary of Nursing gastrula ( gas -troo-lă) n. an early stage in the development of many animal embryos. The gastrula consists of a double-layered ball of cells formed by invagination and movement of cells in the preceding single-layered stage...
Castle, William Ernest
Dictionary entry from: Complete Dictionary of Scientific Biography ...embryonic state of every cell from first cleavage through late gastrula. Castle took issue with the prevailing view of the origin...chordates originates from pouches in the infolded endoderm of the gastrula, in a manner similar to that in the echinoderms. Ciona is...
Kovalevsky, Aleksandr Onufrievich
Dictionary entry from: Complete Dictionary of Scientific Biography ...ascidians, and amphioxi — develop from a bilaminar sac (gastrula) produced by invagina. tion. His work also showed that later...Kovalevsky ’ s conclusion into his own theory of the gastrula; and by Darwin, who saw them as providing embryological proofs...
Beneden, Edouard Van
Dictionary entry from: Complete Dictionary of Scientific Biography ...tendency to sometimes bold generalization. At that time, the gastrula theory of metazoan development was presented by Huxley, Lankester...their structure and observed that they derive from an epibolic gastrula, the hypoblast of which is formed by a long, central single...
pilidium larva In
Book article from: A Dictionary of Zoology pilidium larva In Nemertini , a free-swimming larva which develops directly from the gastrula .
primitive streak
Book article from: A Dictionary of Biology primitive streak The longitudinal groove that develops in the gastrula during the development of bird and mammal embryos. The cells in the primitive streak proliferate rapidly to form mesoderm cells, which migrate to the interior of the embryo.
organizer
Book article from: A Dictionary of Biology organizer An area of an animal embryo that causes adjacent areas of the embryo to develop in a certain way. The primary organizer (blastopore lip or archenteron roof) causes the gastrula to develop as a complete organism.
ectoderm
Book article from: A Dictionary of Biology ectoderm The external layer of cells of the gastrula , which will develop into the epidermis and the nervous system in the adult. See also germ layers .
Brachet, Albert
Dictionary entry from: Complete Dictionary of Scientific Biography ...region of the blastopore becomes the active center of development of the embryonic body. In the vertebrates, however, the gastrula stage is so modified that it is recognizable only with difficulty. Brachet made notable contributions to the solution of this...
Duval, Mathias Marie
Dictionary entry from: Complete Dictionary of Scientific Biography ...evolution. His research in this area reflects his training as a histologist and physiologist: it concerned the formation of the gastrula, development of the blastoderm, the three primitive germ layers and their derivatives in the various species, segmentation...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Microarray analysis of Foxa2 mutant mouse embryos reveals novel gene expression and inductive roles for the gastrula organizer and its derivatives.(Research article)(forkhead transcription factor )
Magazine article from: BMC Genomics; 10/30/2008; ; 700+ words ; ...during gastrulation. In mouse, the early gastrula organizer (EGO) forms just anterior...E6.5, then gives rise to the mid-gastrula organizer (MGO) as the PS elongates...specific transcripts within the mouse gastrula embryo, as well as novel molecular markers...
Specification of germ layer identity in the chick gastrula.(Research article)(Report)
Magazine article from: BMC Developmental Biology; 7/30/2007; ; 700+ words ; Authors: Susan C Chapman (corresponding author) (equal contributor) [1,2]; Kiyoshi Matsumoto (equal contributor) [1,3]; Qin Cai [1]; Gary C Schoenwolf [1] Background The endoderm is a source of signals that pattern anterior structures [1, 2], facial skeleton [3], heart [4, 5], left-right heart
Identification of novel transcripts with differential dorso-ventral expression in Xenopus gastrula using serial analysis of gene expression.(Research)(Report)
Magazine article from: Genome Biology (Online Edition); 2/11/2009; ; 700+ words ; Authors: Fernando Faunes [1]; Natalia Snchez [1]; Javier Castellanos [2]; Ismael A Vergara [2]; Francisco Melo [2]; Juan Larran (corresponding author) [1] Background Embryonic dorso-ventral patterning has been extensively studied in Xenopus laevis [1]. Sperm entry produces a cortical rotation that
Studies from T. Kaneda and colleagues yield new information about developmental biology.
Newspaper article from: Life Science Weekly; 1/26/2010; 700+ words ; ...the dorsal marginal zone (DMZ) of the early gastrula involuted and formed two distinct domains...the notochord in the UDMZ at the early to mid gastrula stages. At the mid to late gastrula stages, part of the Cygsc-expressing LDMZ...
UC-Berkeley biologists focus on mechanisms of tissue formation
News Wire article from: University Wire; 5/8/2000; ; 686 words ; ...of embryos is the origination of the gastrula, which has three germ layers and permits...doomed. "During the formation of the gastrula, the embryo forms three layers," Harland...governing the eventual formation of the gastrula, and found that the same control mechanism...
CHINA TO CLONE GIANT PANDA IN NEAR FUTURE
News Wire article from: AsiaInfo Services; 6/20/2002; 356 words ; ...heterogenous karyoplasm, implantation of gastrula and cloning unit. The experiments of the...karyoplasm has been solved and it can develop to gastrula. The second step is to plant the gastrula into cat's uterus. Now China can fulfill...
Reports from University of California add new data to research in developmental science.
Newspaper article from: Health & Medicine Week; 2/2/2009; 700+ words ; ...anteriormost somites segment during the gastrula and neurula stages from dorsolateral...stripes in the dorsolateral mesoderm at the gastrula stage and in the tail bud while three...expressed in the posterior mesendoderm at the gastrula and neurula stages and in the tail bud...
Research from California Institute of Technology, Division of Biology provides new data on life sciences.(Report)
Newspaper article from: Biotech Week; 6/10/2009; 700+ words ; ...broad, crescent-shaped region of the gastrula. Surprisingly, static fate maps together...with the BMP4 expression domain from gastrula to neurula stages. Some degree of rostrocaudal...incomplete, is already evident in the gastrula. Time-lapse imaging studies show that...
MODELING EARLY EMBRYOLOGY & STEM CELL CONCEPTS
Magazine article from: The American Biology Teacher; 2/1/2008; ; 700+ words ; ...medium that provides support and nutrients. Gastrula (Figure 4) Make a new early placental...paper clip to cut through the center of the gastrula to show the three different layers. The gastrula is multipotent. The early placenta cells...
Researchers from University of Tokyo publish findings in life sciences.
Newspaper article from: Science Letter; 7/28/2009; 700+ words ; ...lim1) is specific to the vertebrate gastrula organizer. Lhx1 functions as a transcriptional...to the evolution of the vertebrate gastrula organizer, and that Lhx3 could be involved...organizer activity of the vertebrate gastrula organizer gene lhx1 and its ancient metazoan...