Onitsha
Onitsha , city (1991 est. pop. 328,000), SE Nigeria, a port on the Niger River. The city's manufactures include textiles, beverages, shoes, lumber, and printed materials. Fishing and canoe-building are traditional local industries. Onitsha is the northern limit of year-round navigation on the Niger and is an important entrepôt linking traders from the Niger delta with the upper Niger and Benue rivers and with a wide region of E Nigeria. A road bridge (built 1965) across the Niger at Onitsha is a vital link between E and W Nigeria. Onitsha was probably founded in the 16th cent. by immigrants from Benin . In the 17th cent. it became capital of an Igbo kingdom. In 1857 a British trading station and a Christian mission were established in the city, and in 1884 Onitsha came under British protection.
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Reevaluation of the Role of the med-1 and med-2 Genes in Specifying the Caenorhabditis elegans Endoderm
Magazine article from: Genetics; 10/1/2005; ; 700+ words
; ...for specification of the C. elegans endoderm (intestine or E lineage) as well...2 are necessary for C. elegans endoderm specification was based on a partially penetrant (~50%) loss of endoderm markers produced by RNA-mediated...
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ISOLATION AND CHARACTERIZATION OF A BOVINE VISCERAL ENDODERM CELL LINE DERIVED FROM A PARTHENOGENETIC BLASTOCYST
Magazine article from: In Vitro Cellular & Developmental Biology; 5/1/2005; ; 700+ words
; ...The BPE-1 cells resembled visceral endoderm previously cultured from blastocysts...for functional comparisons with bovine endoderm cell lines derived from IVF and nuclear...bovine; cell; line; parthenogenic; endoderm. INTRODUCTION In vitro models of bovine...
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Isolation and characterization of porcine visceral endoderm cell lines derived from in vivo 11-day blastocysts
Magazine article from: In Vitro Cellular & Developmental Biology; 2/1/2007; ; 700+ words
; ...porcine cell lines of yolk-sac visceral endoderm, designated as PE-1 and PE-2, were...cells morphologically resembled visceral endoderm previously cultured from in vivo-derived...several genes typical for yolk-sac endoderm differentiation and function including...
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Novocell Obtains U.S. Patent for Drug Screening Human Embryonic Cell Derived-Endoderm Cells.
Business Wire; 6/3/2009; 700+ words
; ...Patent Covers Methods for Identifying Endoderm Differentiation Factors SAN DIEGO...with method claims covering the use of endoderm cells derived from human embryonic stem...patent issued to Novocell related to human endoderm. U.S. Patent No. 7,510,876...
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Ventral midline endoderm situated to act as ventral organizer of head and heart.
Newspaper article from: Cardiovascular Week; 3/31/2003; 679 words
; ...NewsRx.net) -- The ventral midline endoderm is ideally situated to function as a...various cell populations, including endoderm, mesoderm, and neural crest. Here...population. We show that the ventral midline endoderm of the foregut is generated directly...
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A systematic screen for genes expressed in definitive endoderm by Serial Analysis of Gene Expression (SAGE).(Research article)(Report)
Magazine article from: BMC Developmental Biology; 8/2/2007; ; 700+ words
; ...1,3,4] Background The definitive endoderm (DE) is a population of multi-potent...controlling body metabolism. Interest in the endoderm has intensified recently because processes...ventral foregut patterning suggest that endoderm patterning is controlled by soluble factors...
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Extra-embryonic endoderm cells derived from ES cells induced by GATA Factors acquire the character of XEN cells.(Research article)(embryonic stem)(extra-embryonic endoderm)
Magazine article from: BMC Developmental Biology; 7/3/2007; ; 700+ words
; ...the blastocyst cavity differentiates into primitive endoderm (PrE), precursor cells of the extraembryonic endoderm (ExEn) lineage. PrE subsequently differentiates into visceral endoderm (VE) and parietal endoderm (PE) [1]. VE forms...
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Regionalisation of the mouse visceral endoderm as the blastocyst transforms into the egg cylinder.(Research article)(Report)
Magazine article from: BMC Developmental Biology; 8/16/2007; ; 700+ words
; ...all foetal tissues. Finally the primitive endoderm, lining the blatocoelic surface of the epiblast, will give rise to the visceral endoderm (VE), and to the parietal endoderm, which migrates away along the mural trophectoderm...
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Time-dependent patterning of the mesoderm and endoderm by Nodal signals in zebrafish.(Research article)
Magazine article from: BMC Developmental Biology; 3/28/2007; ; 700+ words
; ...blastula stage embryos, for example, endoderm progenitors are restricted to the four...related proteins to induce mesoderm and endoderm is conserved throughout the vertebrate...lack all derivatives of the mesoderm and endoderm in the head and trunk, including the...
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Neither Maternal nor Zygotic med-1/med-2 Genes Play a Major Role in Specifying the Caenorhabditis elegans Endoderm
Magazine article from: Genetics; 2/1/2007; ; 700+ words
; ...specification of both the mesoderm and the endoderm of Caenorhabditis elegans. However...necessary to specify the C. elegans endoderm. Contradicting our conclusions, a recent...the med-1/2 genes do indeed show an endoderm-specifying maternal effect. In this...
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endoderm
Book article from: The Columbia Encyclopedia, Sixth Edition
endoderm , in biology, inner layer of tissue formed...cup. The inner layer of the cup is the endoderm; the outer layer is the ectoderm ; a...mesoderm , forms from a marginal zone. The endoderm is the germ layer from which are formed...
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Body Cavities
Book article from: Animal Sciences
...distinct tissue layers, an ectoderm and endoderm, separated by a third layer called the...layers, the ectoderm, mesoderm, and endoderm. In these acoelomate bilatarian phyla...develops between the mesoderm and the endoderm. Developmentally, the pseudocoelom...
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ectoderm
Book article from: The Columbia Encyclopedia, Sixth Edition
...gastrulation has occurred. This outer layer, together with the endoderm , or inner layer, is present in all early embryos. In the...middle layer, the mesoderm , is formed between the ectoderm and endoderm during gastrulation, and the process is termed triploblastic...
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coelom
Book article from: The Columbia Encyclopedia, Sixth Edition
...between an outer layer, the ectoderm , and an inner layer, the endoderm . The coelom then forms as a result of the splitting and hollowing...mesoderm arises as the lining of folds developing from the endoderm, and the spaces within these folds form the coelom. The structure...
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Prenatal Development
Encyclopedia entry from: Gale Encyclopedia of Children's Health: Infancy through Adolescence
...ectoderm (outer layer), the mesoderm (middle layer), and the endoderm (inner layer). As the embryo develops, each germ layer...reproductive organs, lymphatic tissue, and other tissues. The endoderm forms the lining of lungs, bladder, digestive tract, tongue...
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