Search Results - "Fallon, J.F"

Molecular evidence for an activator-inhibitor mechanism in development of embryonic feather branching by Harris, M.P, Williamson, S, Fallon, J.F, Meinhardt, H, Prum, R.O

“…The developmental basis of morphological complexity remains a central question in developmental and evolutionary biology. Feathers provide a unique system to…”
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Products, genetic linkage and limb patterning activity of a murine hedgehog gene by Chang, David T., López, Alric, Kessler, Doris P. von, Chiang, Chin, Simandl, B. Kay, Zhao, Renbin, Seldin, Michael F., Fallon, John F., Beachy, Philip A.

“…The hedgehog (hh) segmentation gene of Drosophila melanogaster encodes a secreted signaling protein that functions in the patterning of larval and adult…”
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The limb field mesoderm determines initial limb bud anteroposterior asymmetry and budding independent of sonic hedgehog or apical ectodermal gene expressions by Ros, M A, López-Martínez, A, Simandl, B K, Rodriguez, C, Izpisúa Belmonte, J C, Dahn, R, Fallon, J F

“…We have analyzed the pattern of expression of several genes implicated in limb initiation and outgrowth using limbless chicken embryos. We demonstrate that the…”
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Expression of chicken fibroblast growth factor homologous factor (FHF)-1 and of differentially spliced isoforms of FHF-2 during development and involvement of FHF-2 in chicken limb development by Munoz-Sanjuan, I, Simandl, B K, Fallon, J F, Nathans, J

“…Members of the fibroblast growth factor (FGF) family have been identified as signaling molecules in a variety of developmental processes, including important…”
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Retroviral expression of FGF-2 (bFGF) affects patterning in chick limb bud by RILEY, B. B, SAVAGE, M. P, SIMANDL, B. K, OLWIN, B. B, FALLON, J. F

“…To investigate the role of fibroblast growth factor-2 (basic fibroblast growth factor) in chick limb development, we constructed a replication-defective spleen…”
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Altered expression of the chicken homeobox-containing genes GHox-7 and GHox-8 in the limb buds of limbless mutant chick embryos by Coelho, C N, Krabbenhoft, K M, Upholt, W B, Fallon, J F, Kosher, R A

“…It has been suggested that the reciprocal expression of the chicken homeobox-containing genes GHox-8 and GHox-7 by the apical ectodermal ridge and subjacent…”
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Apical ridge dependent and independent mesodermal domains of GHox-7 and GHox-8 expression in chick limb buds by ROS, M. A.K, LYONS, G, KOSHER, UPHOLT, W. B, COELHO, N. D, FALLON, J. F

“…The homeobox-containing genes GHox-7 and GHox-8 have been proposed to play fundamental roles in limb development. The expression of GHox-8, by the apical ridge…”
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Initial limb budding is independent of apical ectodermal ridge activity; evidence from a limbless mutant by Carrington, J L, Fallon, J F

“…Outgrowth of normal chick limb bud mesoderm is dependent on the presence of a specialized epithelium called the apical ectodermal ridge. This ectodermal ridge…”
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Posterior apical ectodermal ridge removal in the chick wing bud triggers a series of events resulting in defective anterior pattern formation by Todt, W L, Fallon, J F

“…The ability of the anterior apical ectodermal ridge to promote outgrowth in the chick wing bud when disconnected from posterior apical ridge was examined by…”
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Spatial and temporal patterns of cell death in limb bud mesoderm after apical ectodermal ridge removal by Rowe, Donene A., Cairns, John M., Fallon, John F.

“…A spatiotemporal pattern of cell death occurred in the chick wing and leg bud mesoderm after removal of apical ectodermal ridge at stages 18–20. Cells died in…”
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Development of the apical ectodermal ridge in the chick wing bud by Todt, W.L, Fallon, J.F

“…Histological examination of the stage-18 to stage-23 chick wing bud apex revealed the following. Initially, the wing bud was covered by a cuboidal to columnar…”
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Experimental manipulation leading to induction of dorsal ectodermal ridges on normal limb buds results in a phenocopy of the eudiplopodia chick mutant by Carrington, Jill L., Fallon, John F.

“…Elongation of chick limb buds depends on the presence of the apical ectodermal ridge which is induced by subjacent limb bud mesoderm. Recombination experiments…”
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Autoradiographic analysis of macromolecular syntheses in prospectively necrotic cells of the chick limb bud. II. Nucleic acids by Pollak, R D, Fallon, J F

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Inhibitory effect on limb morphogenesis by cells of the polarizing zone coaggregated with pre- or postaxial wing bud mesoderm by Crosby, Gayle M., Fallon, John F.

“…The influence of cells of the polarizing zone mesoderm on the morphogenesis of recombinant chick limbs was studied. The recombinant buds were composed of leg…”
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Ultrastructural analysis of the apical ectodermal ridge during vertebrate limb morphogenesis. iI. gap junctions as distinctive ridge structures common to birds and mammals by Fallon, J.F, Kelley, R.O

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The relationship of the zone of polarizing activity to supernumerary limb formation (twinning) in the chick wing bud by Fallon, John F., Crosby, Gayle M.

“…The role of the polarizing zone mesoderm in development of supernumerary distal wing parts after 180° rotation of the wing tip was investigated. Postaxial…”
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effect of removing posterior apical ectodermal ridge of the chick wing and leg on pattern formation by Rowe, D.A, Fallon, J.F

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re-examination of succinic dehydrogenase activity and its association with cell death in the interdigit of the chick foot by Fallon, J.F, Brucker, R.F, Harris, C.M

“…ABSTRACT Massive cell death, which accompanies the freeing of the digits, occurs in the inter digits of the developing chick foot during stages 30–35. The…”
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Normal development of the chick wing following removal of the polarizing zone by Fallon, J F, Crosby, G M

“…The negative results of assays for polarizing activity along the posterior border of the chick wing 24 and 48 hours after removal of the polarizing zone…”
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