Component of the circadian clock or downstream effector of clock function (PubMed:12573214). Room temperature (controlled automatically by building … Xenopus egg extract is a lysate that is prepared by crushing the eggs of the African clawed frog Xenopus laevis.It offers a powerful cell-free (or in vitro) system for studying various cell biological processes, including cell cycle progression, nuclear transport, DNA replication and chromosome segregation.It is also called Xenopus egg cell-free system or Xenopus egg cell-free extract. The word Xenopus means "strange foot" and laevis means "smooth". Xenopus laevis has long been a popular model for studies of development and, ... and genetically much more convenient diploid Xenopus tropicalis (Vogel, 1999). The African clawed frog (Xenopus laevis, also known as the xenopus, African clawed toad, African claw-toed frog or the platanna) is a species of African aquatic frog of the family Pipidae.Its name is derived from the three short claws on each hind foot, which it uses to tear apart its food. drs6j@virginia.edu The mesoderm, comprising the tissues that come to lie entirely in the deep layer, … and Dr. Igawa (Hiroshima Univ. Because X. tropicalis is diploid and X. laevis is tetraploid, important inferences can be made about genome evolution. Verlag der Zeitschrift für Naurforschung, Germany Google Scholar. amphibians, which include Xenopus laevis (X. laevis) and Xenopus tropicalis (X. tropicalis), are one such group of animals with high regenerative capacity (Dinsmore, 1991). Garland Publishing Inc, New York ISBN 0-8153-1896-0. Kalt MR (1976) Morphology and kinetics of spermatogenesis in Xenopus laevis. Xenopus laevis tropicalis. Xenopus contains at least three sarcomeric alpha actin genes that are preferentially expressed in either heart or skeletal muscle. Description: (Xic-GFP) 4.7 kb X. tropicalis p27 Xic1 promoter driving GFP expression in the neural tube and the eye. Xenopus tropicalis and Xenopus laevis environmental parameter standard operating procedure (Kroll lab) From Xenbase. Procedures input by VGP link to Kroll lab Xenopus environmental procedure SOP document at Washington University animal facility: Modified format below: A. The African clawed frog Xenopus tropicalis has several characteristics that facilitate studies of developmental and reproductive toxicity. The African Clawed Frog (Xenopus laevis) is also known to tropical fish keeping enthusiasts as the Xenopus, African Clawed Toad, or African Claw Toed frog and is the only amphibian that actually has claws. The two best-known species of this genus are Xenopus laevis and Xenopus tropicalis, which are studied as model organisms for developmental biology, cell biology, toxicology, neuroscience and for modelling human disease and birth defects. Xenopus tropicalis, on the other hand, possesses a diploid genome and a short generation time, ... (C and D) in stage 55 Xenopus laevis and Xenopus tropicalis tadpoles. 26. Genetic analysis may be applicable to Xenopus (Silurana) tropicalis, which has a diploid genome and a s … Reference: EXRC. Xenopus laevis (XLA) is an allotetraploid species which appears to have undergone whole-genome duplication after the interspecific hybridization of 2 diploid species closely related to Silurana/Xenopus tropicalis (XTR). XenOrtho DB (Xenopus Ortholog DataBase) is a database in which ortholog genes of Xenopus tropicalis, Xenopus laevis and humans are listed. 1. Genetic Map of Xenopus tropicalis Jamie Davies The kidney development database. Download Xenopus Genomes; X. laevis 9.2 (J-Strain) on JBrowse; X. laevis 9.2 (J-Strain) on UCSC; X. laevis 1.0 (wildtype) on JBrowse; X. tropicalis 10.0 (Nigerian) on JBrowse; X. tropicalis 9.1 (Nigerian) on JBrowse; X. tropicalis 9.1 (Nigerian) on UCSC; Xenbase UCSC Track Hub; Veenstra Lab UCSC Track Hub; Other amphibian genomes on JBrowse; Expression. 1. Introduction. The frog Xenopus laevis has provided significant insights into developmental and cellular processes. (2016) have sequenced the genome of Xenopus laevis. Digitized images and developmental data from Nieuwkoop and Faber (1994) Normal Table of Xenopus laevis (Daudin). It uses extremely sensitive fingers, an acute sense of smell, and its lateral line systems to locate food. Shows a small preference for NADPH over NADP(+) (By similarity). *Significantly greater or less (p < 0.05) than the corresponding values for controls. However, X. laevis has an allotetraploid genome precluding its use in forward genetic analysis. Garland Publishing Inc, New York ISBN 0-8153-1896-0. However, another species of frog Xenopus tropicalis can also be a source. Ngn1 is expressed in the otic placode at early embryological stages (up to NF22), but with somewhat stronger expression in Xenopus tropicalis than in Xenopus laevis. This is the first amphibian genome to be sequenced, enabling new insights into vertebrate evolution and the last common ancestor of tetrapods. Xenopus tropicalis was somewhat less sensitive to 6‐AN, semicarbizide and atrazine when tested at 27 °C than at 23 °C. Xenopus tropicalis (Gray, 1864) homotypic synonym: Xenopus (Silurana) tropicalis. Xenopus tropicalis has been developed as a model organism for developmental biology, ... Three ngn subfamilies (Ngnr1–3) have been isolated in both Xenopus laevis and Xenopus tropicalis (Nieber et al., 2009). 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