(n.) A name given in the United States to various species of siluroid fishes; as, the yellow cat (Amiurus natalis); the bind cat (Gronias nigrilabrus); the mud cat (Pilodictic oilwaris), the stone cat (Noturus flavus); the sea cat (Arius felis), etc. This name is also sometimes applied to the wolf fish. See Bullhrad.
Example Sentences:
(1) Microsomal UDP-glucuronosyltransferases (UDPGTs) and cytosolic glutathione S-transferases (GSTs) were examined in bluegill (Lepomis macrochirus R.) and channel catfish (Ictalurus punctatus R.) liver.
(2) It appears that channel catfish B cell mIg capping, presumably a requisite for immune function, can be significantly affected by environmental temperatures; most likely such effects are attributable to changes in plasma membrane viscosities.
(3) In comparative assays, the CH50 titers of catfish sera were similar to the CH50 titers of human sera.
(4) The amino acid sequences of both forms of African catfish GnRH were determined using Edman degradation after digestion with pyroglutamyl aminopeptidase.
(5) We have observed in the catfish retina that cone horizontal cell perikarya and dendrites make conventional chemical synapses onto photoreceptor terminal telodendria and onto bipolar cell dendrites, while horizontal cell axon terminals make chemical synapses onto the perikarya and processes of amacrine cells.
(6) From these results we conclude that: adaptation in the catfish retina includes two components: a) a lateral shift of the voltage-intensity curve along the intensity axis, and b) changes in the time course of light-evoked response.
(7) In olfactory neurons isolated from the channel catfish, Ictalurus punctatus, stimulation with olfactory stimuli (amino acids) elicits an influx of calcium that leads to a rapid increase in intracellular calcium.
(8) ), an inhibitor of GSH biosynthesis, did not deplete hepatic GSH in channel catfish.
(9) Our objective was to identify VG in the channel catfish, Ictalurus punctatus.
(10) The endocrine pancreas of the bullhead catfish, Ictalurus nebulosus, and the channel catfish, I. punctatas was studied by light and electron microscopy.
(11) Anoxic incubation for varying periods of Isoparorchis hypselobagri from the swim bladder of the catfish Wallago attu, led to an accumulation of oxygen debt on the part of the parasite.
(12) This indicates that the neural representation of the external body surface of the channel catfish faces caudally in the FL.
(13) An estimate of the total mass of bone in the Channel catfish Ictalurus punctatus Rafinesque, was obtained by dissection.
(14) Taste receptors for L-alanine and L-arginine in the channel catfish, Ictalurus punctatus, are differentially reactive to N-ethylmaleimide (NEM) and p-chloromercuribenzenesulphonic acid (pCMBS).
(15) Blood cells from Baltic salmon, Salmo salar, three-spined stickleback, Gasterosteus aculeatus, eel pout, Zoarces viviparus, crucian carp, Carassius carassius, African catfish, Clarias gariepinus, and reedfish, Calamoichthys calabaricus, were incubated with tritiated 11 beta-hydroxyandrostenedione (OHA) or 11-ketoandrostenedione (OA).
(16) Catfish GH and PRL were identified by Western blotting with antisera against chum salmon GH and PRL.
(17) The cellular requirements for channel catfish MLR responses were assessed by using three functionally distinct leucocyte subpopulations isolated from the PBL.
(18) The Indian catfish, Heteropneusted fossilis, was chemically thyroidectomized with thiourea.
(19) Neither the concentrations of these three brain tissue substrates, nor L-GDH activity were significantly different between fish at the two locations even though the observed UIA concentrations were equivalent to concentrations which have been observed to increase glutamine concentration in brain tissue of catfish during exposures under laboratory conditions.
(20) Results from oral dose studies indicated that SDM is readily absorbed from the gastrointestinal tract in channel catfish and distributes rapidly to body tissues, primarily the muscle.
Ratfish
Definition:
(n.) Same as Rat-tail.
Example Sentences:
(1) Ratfish serum proteins have been fractionated by ammonium sulfate, followed by gel filtration on Sepharose 6B.
(2) Elephantfish and pig glucagons differ at only four positions, but there are six changes from the ratfish glucagon-36 (normal glucagon contains 29 residues) sequence.
(3) Brain extract from the spotted ratfish, Hydrolagus colliei, contains gonadotropin-releasing hormone (GnRH)-like peptides in both sexes.
(4) Sertoli cells in the ratfish entirely surround a clone of spermatids to form a spermatocyst.
(5) A potent, highly selective bombesin receptor antagonist completely abolished the stimulation of amylase release caused by the ratfish peptide, demonstrating the specificity of the response.
(6) A highly purified bombesin-like peptide-containing fraction stimulated amylase release in a dose-responsive fashion from rat pancreatic acini; the dose-response curve was parallel to a bombesin standard, and the ratfish peptide stimulated the same maximal rate of amylase secretion as the bombesin standard.
(7) The primary structure of insulin from the Holocephalan fish, Hydrolagus colliei (the ratfish), has been established by automated Edman degradation as: (Formula: see text).
(8) The presence of a COOH-terminal extension to the B-chain is consistent with the occurrence of a single base mutation in the region of the gene encoding one of the dibasic residue processing sites [Arg31(AGA)----Ile* (AUA)] with the result that the ratfish has utilised an alternative cleavage site within the C-peptide region of proinsulin.
(9) Two molecular forms of glucagon-like peptide were isolated from the ratfish pancreas.
(10) A 36-amino-acid-residue peptide was isolated from the pancreas of a holocephalan fish, the Pacific ratfish (Hydrolagus colliei), that shows homology (69%) to mammalian glucagon in its N-terminal region and is reactive towards an N-terminally directed antiserum.
(11) Spermiogenesis in the ratfish (Hydrolagus colliei) is characterized by unusual changes in the basic proteins of the nucleus.
(12) Ratfish (Hydrolagus colliei) intestines were boiled in water to inactivate proteases and then treated with cold 4% trifluoroacetic acid to extract bombesin-like peptides.
(13) Pituitary extracts from all animals, except the ratfish, goldfish and trout, contained IR-CGRP.
(14) The ratfish represents the most primitive organism that contains a form of GnRH that coelutes with chicken II and salmon II GnRH.
(15) The insulin B-chain contains 31 residues, one more than mammalian insulins, but markedly less than that of the closely related ratfish with which it otherwise exhibits high sequence similarity.
(16) The insulin with 38 amino acids in the B-chain was equipotent with human insulin in inhibiting the binding of radiolabelled human insulin to rat fat cells but the maximum effect of ratfish insulin upon the transport of 3-O-methylglucose into the cells was only 65% of the maximum effect of human insulin.
(17) In contrast to the heavy chain, the ratfish light chains display low sequence similarity with their shark kappa counterparts.
(18) It is argued that the ratfish GnRH molecule has been retained for over 400 million years of evolution and is expressed in most vertebrate classes.
(19) The amino acid compositions of both rabbit fish and ratfish insulins demonstrated a value consistently lower than that expected for the leucine content of the peptides.
(20) Gonadotropin-releasing hormone (GnRH) in the ratfish brain has been isolated and purified using reverse-phase high performance liquid chromatography.