(n.) A fresh-water fish of many species, of the genus Uranidea, esp. U. gobio of Europe, and U. Richardsoni of the United States; -- called also miller's thumb.
(n.) In America, several species of Amiurus; -- called also catfish, horned pout, and bullpout.
(n.) A marine fish of the genus Cottus; the sculpin.
(n.) The black-bellied plover (Squatarola helvetica); -- called also beetlehead.
(n.) The golden plover.
(n.) A stupid fellow; a lubber.
(n.) A small black water insect.
Example Sentences:
(1) No brown bullheads of ages 6 or 7 were collected in the Black River, while these age groups composed 18% of the catch in Old Woman Creek.
(2) The endocrine pancreas of the bullhead catfish, Ictalurus nebulosus, and the channel catfish, I. punctatas was studied by light and electron microscopy.
(3) In bullhead hepatocytes, epinephrine induced a biphasic [Ca2+]i response, with an initial transient rise followed by a sustained component; this response was virtually abolished in the absence of extracellular Ca2+.
(4) Ultrastructural, functional, and cytochemical characteristics of resident sinusoidal macrophages (RSM) in brown bullhead (Ictalurus nebulosus) liver were examined.
(5) Control bullhead brains had higher concentrations of glycogen, ATP, creatine phosphate (CrP), and glucose than control trout.
(6) PaO2 and ventilation measurements in Salmo gairdnerii and Ictalurus melas (brown bullhead) were performed during progressive or step changes of PwO2.
(7) Fresh or ripened spores of M. cotti and M. cerebralis were not infectious for bullheads or rainbow trout, respectively.
(8) The cerebellar afferents in the bullhead catfish (Teleostei) were labeled by relying on the retrograde transport of horseradish peroxidase (HRP).
(9) Established cell lines from brown bullhead catfish (BB) and rainbow trout (RTG-2) and primary cultures of cells derived from gill, fin, and gonad tissues from brown bullhead catfish were evaluated for use as bioindicators in the neutral red cytotoxicity assay.
(10) Black bullheads were able to accumulate 60Co from water.
(11) Possible mechanisms for elimination of the superfluous axons observed in the white muscle of the developing brown bullhead are discussed.
(12) The in vitro metabolism of [3H]benzo[a]pyrene (BP) and [14C]benzo[a]pyrene-7,8-dihydrodiol (BP-7,8-diol) by liver of brown bullhead (Ictalurus nebulosus) was characterized, as was the formation and persistence of BP-DNA adducts in vivo.
(13) No conversion occurred in the control tissue with the temperature maintained at 12 degrees C. No qualitative difference in the incorporation of [(3)H]leucine into proinsulin and its conversion into insulin at 12 degrees and 22 degrees C could be demonstrated between islet tissue from fish acclimated to less than 12 degrees C or to 22 degrees C. The results suggest that the enzyme(s) responsible for converting proinsulin into insulin in the bullhead may be temperature sensitive with low activity at 12 degrees C.
(14) A 3-MC-type of cytochrome P-450 appears to be primarily responsible for the oxidation of B f Q by control brown bullhead liver microsomes, whereas a phenobarbital-inducible type of cytochrome P-450 seems to be involved in the metabolism of B f Q by control rat liver microsomes.
(15) n. is described from the warmouth, Lepomis gulosus (Cuvier); brown bullhead, Ictalurus nebulosus (Lesueur); yellow bullhead, I. natalis (Lesueur); redbreast sunfish, L. auritus (Linnaeus); bluegill, L. macrochirus Rafinesque; spotted sunfish, L. punctatus (Valenciennes); and redfin pickerel, Esox americanus (Gmelin), from the Alabama River Drainage, brown bullhead from the Mobile Bay Drainage in Alabama, and pirate perch, Aphredoderus sayanus Gilliams, from an Atlantic Coast drainage in Georgia.
(16) These age and length distributions are consistent with the hypothesis that brown bullheads in the Black River were subjected to an age-selective mortality associated with high prevalences of liver carcinoma.
(17) Using degeneration staining methods, central projections of the olfactory tracts in the bullhead catfish, Ictalurus nebulosus were studied.
(18) Liver microsomes from rats were considerably more active in metabolizing benzo[f]quinoline (B f Q) than those from brown bullheads (Ictalurus nebulosus).
(19) Insulin biosynthesis in the brown bullhead, Ictalurus nebulosus (Le Sueur), was studied by measuring the incorporation in vitro of [(3)H]leucine into proteins of the principal islet.
(20) The antiviral effect of acyclovir (ACV; 9-(2-hydroxyethoxymethyl)guanine) on the replication of channel catfish virus (CCV), a poikilothermic herpesvirus, in brown bullhead cells (BB) was studied in vitro.
Species
Definition:
(n.) Visible or sensible presentation; appearance; a sensible percept received by the imagination; an image.
(n.) A group of individuals agreeing in common attributes, and designated by a common name; a conception subordinated to another conception, called a genus, or generic conception, from which it differs in containing or comprehending more attributes, and extending to fewer individuals. Thus, man is a species, under animal as a genus; and man, in its turn, may be regarded as a genus with respect to European, American, or the like, as species.
(n.) In science, a more or less permanent group of existing things or beings, associated according to attributes, or properties determined by scientific observation.
(n.) A sort; a kind; a variety; as, a species of low cunning; a species of generosity; a species of cloth.
(n.) Coin, or coined silver, gold, ot other metal, used as a circulating medium; specie.
(n.) A public spectacle or exhibition.
(n.) A component part of compound medicine; a simple.
(n.) An officinal mixture or compound powder of any kind; esp., one used for making an aromatic tea or tisane; a tea mixture.
(n.) The form or shape given to materials; fashion or shape; form; figure.
Example Sentences:
(1) The variation in thickness of the LLFL may modulate the species causing damage to the cells below it.
(2) Comparison of the S100 alpha-binding protein profiles in fast- and slow-twitch fibers of various species revealed few, if any, species- or fiber type-specific S100 binding proteins.
(3) The data indicate that ebselen is likely to be useful in the therapy of inflammatory conditions in which reactive oxygen species, such as peroxides, play an aetiological role.
(4) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(5) When compared with lissencephalic species, a great horizontal fibrillary system (which is vertically arranged in gyral regions) was observed in convoluted brains.
(6) The TxA2 antagonistic effects of KW-3635 were compared with that of daltroban in PRP from various animals species.
(7) Only the approximately 2.7 kb mRNA species was visualized in Northern blots of total cellular and poly(A+) RNA isolated from cardiac ventricular muscle.
(8) Comparison of developmental series of D. merriami and T. bottae revealed that the decline of the artery in the latter species is preceded by a greater degree of arterial coarctation, or narrowing, as it passes though the developing stapes.
(9) The immunological methods based on the use of a flagellum-specific serum have confirmed the presence of a common flagellum antigen for all Legionella species described to date.
(10) This observation not only provides definitive evidence for the photogeneration of O2-, but also indicates that only a fraction of this species is transformed into H2O2 in the absence of SOD.
(11) To further characterize the molecular forms of GnRH in each species, the extracts were injected into a high pressure liquid chromatograph (HPLC).
(12) Each species has approximately 500 core histones cluster repeats per haploid genome.
(13) After immunoadsorbent purification, the final step in a purification procedure similar to that adopted for colon cancer CEA, two main molecular species were identified: 1) Material identical with colon cancer CEA with respect to molecular size, PCA solubility, ability to bind to Con A, and most important the ability to bind to specific monkey anti-CEA serum.
(14) Both of these species belong to the serotype B. MCAs T11 and T15, the first recorded with a specificity for only sub-serotype A2 EF, were tested further against 28 sub-serotype A2 and three sub-serotype A2B2EFs from L. tropica strains.
(15) The results suggest that involucrin-like proteins have a wider species distribution than originally appreciated.
(16) Sequence specific binding of protein extracts from 13 different yeast species to three oligonucleotide probes and two points mutants derived from Saccharomyces cerevisiae DNA binding proteins were tested using mobility shift assays.
(17) The genome characterization of the typing strains for all 13 species of the genus Staphylococcus, included into the Approval List of the Names of Bacterial (1980), is presented.
(18) Two lectins, wheat germ agglutinin (WGA) and peanut agglutinin (PNA), were used to compare domains within the interphotoreceptor matrices (IPM) of the cat and monkey, two species where the morphological relationship between the retinal pigment epithelium (RPE) and photoreceptors is distinctly different.
(19) The regional distribution of the receptor showed insignificant species differences.
(20) Temelastine produces these species-specific changes by enhancing thyroxine clearance from the circulation in the rat, but not in the dog or mouse.