Results 91 to 100 of about 29,170 (291)

Dorsoventral Patterning: A Serpin Pinned down at Last [PDF]

Current Biology, 2004
Dorsoventral patterning in Drosophila has long been known to involve a cascade of proteases, held in the inactive zymogen state prior to signaling. At long last, the prediction that a protease inhibitor is involved in this pathway has been shown to be true, with the identification of a serpin that plays a key part in Drosophila embryonic patterning.
openaire   +2 more sources

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

The Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo, Júlio César Costa de Souza, Angele Martins   +2 more
wiley   +1 more source

Misexpressing Eph receptors results in dorsoventral pattern changes of the central VIIIth nerve projections.

, 2013
Mean dorsoventral extent of auditory (black) and vestibular (gray) hindbrain compartments are shown for (A) transfected embryos and (B) Fc-fusion protein injected embryos.
Michelle R. Allen-Sharpley (469209), Michelle Tjia (469210), Karina S. Cramer (340251)   +2 more
core   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Avaliação radiográfica da silhueta cardíaca pelo método vertebral heart size em cães da raça Yorkshire Terrier clinicamente normais

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2011
Determinou-se valor médio do vertebral heart size (VHS) em cães da raça Yorkshire Terrier. Foram selecionados 30 cães clinicamente normais, com média de peso de 2,42±0,64kg e idades entre um e seis anos.
M.G. Castro, R.C.S. Tôrres, R.B. Araújo, R.A.L. Muzzi, E.F. Silva   +4 more
doaj   +1 more source

Dorsoventral flexibility of the neck of Struthio camelus with tissue removal.

, 2013
Measurements of dorsoventral flexibility of the neck joints of Struthio camelus through stages of cumulative tissue removal. (a) All tissues present. (b) Long dorsal muscles removed. (c) Long ventral muscles removed. (d) Long lateral muscles removed. (e)
Paul M. Barrett (162813), Emily J. Rayfield (109580), Matthew J. Cobley (445940)   +2 more
core   +1 more source

Independence of chromatin conformation and gene regulation during Drosophila dorsoventral patterning

, 2021
Chromatin conformation is largely independent of dorsoventral gene expression during early embryonic development in Drosophila. Despite tissue-specific differences in chromatin state and gene expression, three-dimensional chromatin organization is ...
Mannervik, Mattias,, Ing-Simmons, Elizabeth, Vaquerizas, Juan M., Vaid, Roshan,, Levine, Michael, Yang Bing, Xin   +5 more
core   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source

Summary of Inferred Evolutionary Changes of the Dorsoventral Axis in Deuterostome Evolution, with Emphasis on Hemichordates and Chordates

, 2013
Mesoderm is shown in red, endoderm in yellow and ectoderm in blue (neural) and grey (epidermis). An ancestral secreted Bmp axis was involved in dorsoventral patterning of the three germ layers in the bilaterian ancestor.
Linda Runft (274784), Eric Lander (274790), Christopher J Lowe (274776), Kristen Kwan (274786), Mark Smith (274792), Marc Kirschner (274793), Jochanan Aronowicz (274789), Chris Gruber (274791), Robert M Freeman Jr. (274782), Saori Haigo (274788), Mark Terasaki (274778), Michael Wu (274780), John Gerhart (274795)   +12 more
core   +1 more source

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source