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1 y inside the ectoderm, and generation of the archenteron.
2 ension movements during the formation of the archenteron.
3  to examine the mechanical properties of the archenteron.
4 both ectodermal lineages and portions of the archenteron.
5 efore this territory invaginates to form the archenteron.
6 y of animal blastomeres to contribute to the archenteron.
7 s also regulated to that new position in the archenteron.
8 derm and fusing at the dorsal midline of the archenteron.
9  promote expression in the vegetal plate and archenteron.
10 o locate expression in the vegetal plate and archenteron.
11 oisson effect (necking) that occur in actual archenterons.
12 ere also common, including reduced or absent archenterons.
13 t primordium is similar to elongation of the archenteron and also of the entire embryonic axis (both
14 e, at the gastrula stage in the whole of the archenteron and in postgastrular stages only in the midg
15                                          The archenteron and its derivatives were measured three dime
16 the Endo16 gene, expressed in vegetal plate, archenteron and midgut.
17 endodermal target genes are expressed in the archenteron and might be terminal differentiation enzyme
18 (4) that interactions between the tip of the archenteron and the presumptive oral ectoderm are not re
19 region and the posterior of the invaginating archenteron, and finally to the midgut and hindgut of th
20 e, expressed in the embryonic vegetal plate, archenteron, and then midgut.
21 eposited in the basal lamina surrounding the archenteron as well as in other areas of the blastocoel
22 cribed BAPN-Associated Target with Malformed Archenteron (BATMAN), identified here.
23                                       As the archenteron begins to elongate, marking the onset of the
24 ge embryos SpHmx is expressed throughout the archenteron, but particularly strongly in delaminating s
25 e layered epithelium, and whether or not the archenteron cavity actually gives rise to the gut lumen.
26                                  Instead the archenteron cavity almost closes at tailbud stages befor
27 eavage pattern in determining ectodermal and archenteron cell fates.
28                                         Both archenteron cell number and wall volume continued to inc
29 ondary invagination involves the addition of archenteron cells and an increase in volume of the arche
30 during secondary invagination, the number of archenteron cells increased by at least 38% (over 50% wh
31 e rearrangement and reshaping of the primary archenteron cells.
32  RhoA induces precocious invagination of the archenteron, complete with the actin rearrangements and
33 eneration gives rise to larvae containing no archenteron derivatives at all, endoderm only, or both e
34 alone each regenerate the full complement of archenteron derivatives; thus, they are uninformative as
35         In addition, epithelial cells in the archenteron display a significant decrease in adherens j
36 mall micromere descendents at the tip of the archenteron during gastrulation and are then enriched in
37 econdary mesenchyme cells and the elongating archenteron during gastrulation; Cadherin (G form) has a
38 cellular matrix of cells of the invaginating archenteron during sea urchin gastrulation.
39 earrangement can account for key features of archenteron elongation and provides a useful starting po
40 chanical model, we show that key features of archenteron elongation can be accounted for by passive c
41 lation of secondary mesenchyme cells late in archenteron elongation does not result in extensive elas
42 cells to the base of the archenteron late in archenteron elongation leads to excessive cell rearrange
43                         In addition, much of archenteron elongation was found to be independent of Xd
44  cell division being a responsible force for archenteron elongation.
45 g sites of mesoderm specification within the archenteron endomesoderm.
46                            The volume of the archenteron epithelial wall plus the volume of 17 new SM
47 teron cells and an increase in volume of the archenteron epithelium, we conclude that secondary invag
48 convergent extension, blastopore closure and archenteron formation in a single embryo.
49 ction is included in the kinetic analysis of archenteron formation.
50 s an extensive rearrangement of cells of the archenteron giving rise to secondary mesenchyme at the a
51 enotype in C5a knockdown embryos, and causes archenteron hyper-invagination in control embryos.
52 ort-range communication between cells of the archenteron in order to reorganize the tissues and posit
53                 Although invagination of the archenteron in sea urchins and dorsal closure in Drosoph
54 bilaterally symmetric, and flank the ectopic archenteron, in some cases resulting in mirror-image, sy
55 , but they accompany the invagination of the archenteron initially, in much the same way vertebrate m
56 dy reports that RhoA is necessary to trigger archenteron invagination in the sea urchin embryo.
57 r SMCs but also causes decreased and delayed archenteron invagination.
58  movements and to cell rearrangements during archenteron invagination.
59 egetal plate and primary invagination of the archenteron, involves only the Endo16-expressing cells o
60            Late elongation of the sea urchin archenteron is a classic example of convergent extension
61           Furthermore, they suggest that the archenteron is competent to form mesoderm or endoderm, a
62                     During gastrulation, the archenteron is formed using cell shape changes, cell rea
63      These results show that the prospective archenteron is produced by a larger population of cleava
64 ing the addition of cells to the base of the archenteron late in archenteron elongation leads to exce
65 be into a long thin tube; secondly, that the archenteron lining does not become the definitive gut lu
66 somitic morphology while still a part of the archenteron lining.
67                                    While the archenteron lumen doubled in length during secondary inv
68 ng Notch signal as one upstream component of archenteron morphogenesis.
69 re, as an initial step towards examining how archenteron precursors are specified, a clonal analysis
70 eric embryo approach, we show that implanted archenteron precursors differentiate autonomously to pro
71 s demonstrate that mesoderm induction in the archenteron requires contact with ectoderm, and loss-of-
72                Recombination of ectoderm and archenteron rescues development.
73 gesting that this region of the fully formed archenteron retains an unexpected pluripotency.
74 al effect of disrupting morphogenesis of the archenteron, revealing a previously unsuspected function
75                               Long after the archenteron reveals territorial specification through ex
76 nsion of deep ectoderm just underlain by the archenteron roof is twice that of not-yet-underlain deep
77 nic mesenchyme, the CyIIa gene, expressed in archenteron, skeletogenic and secondary mesenchyme, and
78     After removal of any or all parts of the archenteron, the remaining veg 1 and /or veg 2 tissue re
79 y retain apical projections extending to the archenteron throughout gastrulation.
80 n giving rise to secondary mesenchyme at the archenteron tip followed by the foregut, midgut and hind
81 rived from the host, the ectopic presumptive archenteron tissue can act to 'organize' ectopic axial s
82 ition, the ectopically implanted presumptive archenteron tissue induces ectopic skeletal patterning s
83          Both veg1 and veg2 descendants form archenteron tissues, revealing that the ectoderm and end
84          Oral veg1 clones extended along the archenteron up to the foregut region, while aboral veg1
85 t decline until after full elongation of the archenteron was completed.
86 mbryo but the recognizable morphology of the archenteron was re-established.
87 when SMCs that emigrated from the tip of the archenteron were included).
88 ve capacity of this structure, pieces of the archenteron were removed or transplanted at different st
89                         After removal of the archenteron (which includes presumptive coelomic mesoder