(1) Nature has provided other examples of genetic factors which induce melanomas, i.e., the melanomas which form in the platyfish and Sinclair miniature swine.
(2) The follicles were arranged in characteristic dense aggregations, especially in the melanotic platyfish.
(3) This is the first report of ir-TH in the nucleus olfactoretinalis, an LHRH-containing nucleus in the brain which plays an important role in the development and functioning of the reproductive system in platyfish.
(4) Southern blot analysis with the same probe demonstrates related sequences in the DNA of BsT cells and the platyfish and swordtail (Xiphophorus helleri).
(5) In this study on platyfish we demonstrate that the distribution and intensity of immunoreactive luteinizing hormone releasing hormone (ir-LHRH) in the brain and pituitary gland fluctuate at specific ages between 8 and 30 months.
(6) Exposure of pregnant platyfish to 5-bromodeoxyuridine during the time of differentiation of embryonic melanocytes enhanced the production of viral-like particles in platyfish embryos.
(7) Immunoreactive tyrosine hydroxylase (ir-TH), the rate-limiting enzyme for the synthesis of dopamine and other catecholamines, was localized in the brain and pituitary gland of sexually mature platyfish (Xiphophorus maculatus).
(8) The immunocytochemical distribution of immunoreactive serotonin (ir-5HT) was studied in the forebrain of male platyfish ranging in age from 5 to 30 months (mean life span, 30 months).
(9) We have developed a useful animal model from crosses and backcrosses of platyfish (Xiphophorus maculatus) and swordtails (Xiphophorus helleri).
(10) In contrast, certain backcrosses of Xiphophorus maculatus (platyfish) with Xiphophorus helleri (swordtail) as the recurrent parent, produce offspring that develop neoplasia in a Mendelian fashion.
(11) In the erythrophores of the platyfish (Xiphophorus maculatus) and the swordtail (Xiphophorus helleri), and in the xanthophores and amelanotic melanophores of the medaka (Oryzias latipes), pigment aggregation took place in response to MCH even in the absence of Ca2+.
(12) Stanniocalcin was localized by immunocytochemistry in the neurohypophysis and preoptic area of the platyfish brain, in areas in which irPTH has previously been detected in other teleosts.
(13) Tissue-specific esterases of the xiphophorine fishes Platypoecilus maculatus (platyfish), Xiphophorus helleri (swordtail), and their F1 hybrid have been analyzed using disc electrophoresis.
(14) Somatostatin (SRIF) was localized by immunocytochemistry in the brains and pituitary glands of male and female platyfish (Xiphophorus maculatus) between the ages of 8 and 30 months (average life span is 30 months).
(15) Viral-like particles were found in the kidney tissue of platyfish embryos.
(16) The platyfish-swordtail melanoma system represents an appropriate model for the investigation of the relationship between hyperthermia and melanoma formation and treatment in poikilothermic vertebrates.
(17) The Tu-complex is located at the end of an autosome or sex chromosome, and is largely deregulated by crossing conditioned replacement of platyfish chromosome carrying regulatory genes (tumor suppressor genes, oncostatic genes, antioncogenes) for the Tu-complex by swordtail chromosomes lacking them.
(18) Normally, the platyfish is protected from its own Tu by Tu-specific regulatory gene systems.
(19) The method developed for embryonic tissues was used to start cell cultures from melanoma of platyfish-swordtail hybrids.
(20) In contrast, certain backcrosses of Xiphophorus maculatus (platyfish) with Xiphophorus helleri (swordtail) as the recurrent parent produce offspring that develop neoplasia in a Mendelian fashion.
Swordtail
Definition:
(n.) The limulus.
(n.) Any hemipterous insect of the genus Uroxiphus, found upon forest trees.
Example Sentences:
(1) Melanomas developed in both sexes of a strain of Tuxedo variety of the swordtail (Xiphophorus helleri) at a relative frequency of 10-15%.
(2) In the liver of the platfish, all seven esterase zones were detected, while the liver of the swordtail exhibited only five esterase zones.
(3) Southern blot analysis with the same probe demonstrates related sequences in the DNA of BsT cells and the platyfish and swordtail (Xiphophorus helleri).
(4) Males of X. alvarezi, like those of other species of swordtails, develop a caudal appendage or sword at maturity.
(5) We have developed a useful animal model from crosses and backcrosses of platyfish (Xiphophorus maculatus) and swordtails (Xiphophorus helleri).
(6) Observations were carried out on adult specimens of both sexes, including pregnant femals of Mexican swordtail.
(7) In contrast, certain backcrosses of Xiphophorus maculatus (platyfish) with Xiphophorus helleri (swordtail) as the recurrent parent, produce offspring that develop neoplasia in a Mendelian fashion.
(8) In the erythrophores of the platyfish (Xiphophorus maculatus) and the swordtail (Xiphophorus helleri), and in the xanthophores and amelanotic melanophores of the medaka (Oryzias latipes), pigment aggregation took place in response to MCH even in the absence of Ca2+.
(9) Tissue-specific esterases of the xiphophorine fishes Platypoecilus maculatus (platyfish), Xiphophorus helleri (swordtail), and their F1 hybrid have been analyzed using disc electrophoresis.
(10) The platyfish-swordtail melanoma system represents an appropriate model for the investigation of the relationship between hyperthermia and melanoma formation and treatment in poikilothermic vertebrates.
(11) The Tu-complex is located at the end of an autosome or sex chromosome, and is largely deregulated by crossing conditioned replacement of platyfish chromosome carrying regulatory genes (tumor suppressor genes, oncostatic genes, antioncogenes) for the Tu-complex by swordtail chromosomes lacking them.
(12) In addition, EST-1 was frequently detected in all these tissues of the platfish and the F1, but was lacking in the swordtail.
(13) The method developed for embryonic tissues was used to start cell cultures from melanoma of platyfish-swordtail hybrids.
(14) In contrast, certain backcrosses of Xiphophorus maculatus (platyfish) with Xiphophorus helleri (swordtail) as the recurrent parent produce offspring that develop neoplasia in a Mendelian fashion.
(15) Acrylamide gel electrophoresis has been used to make comparisons of the distribution of soluble protein and the activity of esterase in skin and melanoma extracts of the swordtail, the platyfish, and their hybrids.
(16) Some explorations have been undertaken in the laboratory by Anders and collaborators in studies of suppressor genes (antioncogenes) and the cellular sarc gene (an oncogene) in melanophoromas in platyfish-swordtail hybrids and backcrosses.
(17) The sex-determining mechanism of swordtails (Xiphophorus, Poeciliidae, Pisces) is poorly understood, because many laboratory strains of these species are characterized by biased sex ratios in either the male or female direction.
(18) In fishes of the genus Xiphophorus, hybrid offspring of the spotted dorsal female platyfish, X. maculatus, and male swordtails, X. helleri, are genetically programmed to develop melanoma when raised at ambient laboratory temperatures.
(19) Ultrastructural studies were performed on embryos of an inbred strain (163A) of the platyfish Xiphophorus maculatus, and a pooled stock of the Rio Sarabia strain of the swordtail, X. helleri.
(20) Moreover, immature Mexican swordtails of both sexes were examined.