(n.) A voracious ganoid fish (Amia calva) found in the fresh waters of the United States; the mudfish; -- called also Johnny Grindle, and dogfish.
Example Sentences:
(1) The kidney of the bowfin possesses an abundant supply of renal corpuscles with each consisting of a glomerulus and a Bowman's capsule of visceral (podocyte) and parietal layers.
(2) Undecussated ipsilateral retinal projections, as present in the bowfin, are a widely distributed character in vertebrates and appear to be plesiomorphic for vertebrates.
(3) Amino acid metabolism was examined in mitochondria from the lateral red muscle of a teleost (lake char, Salvelinus namaycush) and a nonteleost fish (bowfin, Amia calva).
(4) Intracellular recordings were obtained from biphasic- and triphasic-type horizontal cells (C cells) in the retina of the bowfin.
(5) Yellow corpuscles from the ventral surface of the anterior kidney in bowfins (Amia calva L.) converted [7-3H]pregnenolone to radioactive 11-deoxycortisol, cortisol, and corticosterone in vitro.
(6) A new technique is presented for determining the volume of extracellular space in bowfin (Amia calva) brain during in vitro incubation.
(7) The posterior pretectal nucleus is relatively small in the bowfin, and the distribution of a small, versus a large, posterior pretectal nucleus in Teleostei and Halecomorphi suggests that this nucleus was small plesiomorphically.
(8) Homologous peptides belonging to the pancreatic polypeptide (PP) family were isolated from the pancreas of a teleostean fish, the American eel (Anguilla rostrata), an holostean fish, the bowfin (Amia calva) and an elasmobranch fish, the skate (Raja rhina), and their primary structures were determined.
(9) The rate of glutamine oxidation by bowfin mitochondria exceeds that of lake char mitochondria, and the bowfin displays correspondingly higher levels of mitochondrial phosphate-dependent glutaminase.
(10) The nephron of adult bowfin, Amia calva, was described using light and electron microscopic techniques.
(11) The findings in bowfin and other species suggest that both feedback and direct pathways shape the depolarizing response of C cells.
(12) The primary structure of insulin from a holostean fish, the bowfin (Amia calva), was established as: A-chain: Gly-Ile-Val-Glu-Gln-Cys-Cys-Leu-Lys-Pro-Cys-Thr-Ile-Tyr-Glu-Met-Glu- Lys-Tyr-Cys-Asn B-chain: Ala-Ala-Ser-Gln-His-Leu-Cys-Gly-Ser-His-Leu-Val-Glu-Ala-Leu-Phe-Leu- Val-Cys-Gly-Glu-Ser-Gly-Phe-Phe-Tyr-Asn-Pro-Asn-Lys-Ser This amino acid sequence contains several substitutions (methionine at A16, phenylalanine at B16 and serine at B22) at sites that have been strongly conserved in other vertebrate species and that may be expected to influence biological activity.
(13) To assess the role of triiodothyronine (T3) in mediating short-term changes in metabolism, such as those occurring in circadian patterns, we examined the effects of intraperitoneal injection of T3 on the oxidation of substrates by isolated mitochondria from liver of the bowfin, Amia calva, and red muscle and liver of the lake char, Salvelinus namaycush.
(14) Blood from the primitive holostean fish, the bowfin, Amia calva, contains 2 mo of ATP per mol of hemoglobin.
(15) The pattern of retinofugal projections in the bowfin is similar to that in other non-teleost actinopterygian fishes and in teleosts in most regards.
(16) Activity of sulfated CCK8 in bowfin, a holostean fish, suggests sensitivity of gallbladder to CCK-related intestinal hormones may be a general feature of osteichthyeans.
(17) Three hours after intraperitoneal injection of T3, oxidation of some substrates by mitochondria isolated from the liver of the bowfin was reduced.
(18) The retinofugal projections in the bowfin, a non-teleost actinopterygian, were studied by autoradiographic and horseradish peroxidase methods, and the cytoarchitecture of retinorecipient regions of the diencephalon was analyzed with serially sectioned, Bodian stained material.
(19) In the bowfin CCK immunostained cells were detected only in the anterior and mid-intestine; the stomach and the rest of the gastrointestinal tract were negative.
(20) The effect of hypophysectomy on chloride balance was examined in young-of-the-year bowfin, Amia calva.
Dogfish
Definition:
(n.) A small shark, of many species, of the genera Mustelus, Scyllium, Spinax, etc.
(n.) The bowfin (Amia calva). See Bowfin.
(n.) The burbot of Lake Erie.
Example Sentences:
(1) In other dogfish, glomerular filtration rate, urine flow, and Na and K excretory rates were measured for 3 days following implantation of desoxycorticosterone (DOCA), adrenocorticotropin (ACTH), or spironolactone; a control group was given no drug.
(2) The results showed that dogfish lenses developed superficial opacities due to near-UV exposure.
(3) The N-terminal tridecapeptide sequence was identical with the proposed structure of dogfish alpha-melanocyte-stimulating hormone (alpha-MSH).
(4) The "apo" lactate dehydrogenase structure was solved by use of the known apo-M4 dogfish lactate dehydrogenase molecule as a starting model.
(5) In addition, the interrenal cells of the common dogfish are strikingly rich in microfilament-like inclusions.
(6) In contrast to dogfish sharks, stringrays with high spinal transections do not locomote.
(7) It is concluded that, despite a broader specificity, the activity spectrum of dogfish enzyme is, in many respects, similar to that of calf chymosin.
(8) Tissue from the digitiform rectal gland of the spiny dogfish, Squalus acanthias, was fixed briefly by formaldehyde perfusion and studied for the specificity and localization of p-nitrophenyl phosphatase (NPP'ase) activity.
(9) A melanocyte-stimulating hormone (MSH) has been isolated from extracts of the neurointermediate lobe of the pituitary of the dogfish Squalus acanthias by gel-filtration and ion-exchange chromatography.
(10) Initial-rate studies were made of the oxidation of L-glutamate by NAD+ and NADP+ catalysed by highly purified preparations of dogfish liver glutamate dehydrogenase.
(11) Aqueous humor dynamics were studied in the dogfish, Squalus acanthias, using isotopically labeled inulin, Na+, Cl-, and HCO-3.
(12) The spiracular sense organs of the little skate, Raja erinacea, and the smooth dogfish, Mustelus canis, respond to movements of the hyomandibula-cranial joint.
(13) The primary structure of glucagon isolated from the intestine of the common dogfish, Scyliorhinus canicula, was established as H S E G T F T S D Y S K Y M D N R R A K D F V Q W L M N T. The peptide shows four substitutions compared with human glucagon: Glu-3 for Gln, Met-14 for Leu, Asn-16 for Ser and Lys-20 for Gln.
(14) Glycogen debranching enzyme (4-alpha-glucanotransferase amylo-1,6-glucosidase, EC 2.4.1.25 + 3.2.1.33) was purified 140-fold from dogfish muscle in a rapid, high-yield procedure that takes advantage of a strong binding of the enzyme to glycogen, and its quantitative adsorption to concanavalin A-Sepharose only when the polysaccharide is present.
(15) The skin of the dogfish in an exchanger for oxygen supplying 10% of oxygen requirements of other organs of the body in these experimental conditions (t = 13 degrees C).
(16) In marine fish (herring, dogfish shark, hagfish) FAO activities were all less than 15% that of rats and undetectable in hagfish.
(17) The dogfish enzyme has a higher pH optimum (8.5) and a broader spectrum of activity above and below its optimum than a commercial porcine lipase preparation (optimum, 7.5).
(18) The physiological effects of dogfish GnRH included the release of not only gonadotropin but also growth hormone from goldfish pituitary fragments.
(19) In this experiment, testicular tissues from different dogfish corresponding to the zones of lobules with spermatogonia (A), spermatocytes (B), early spermatids (C) and late spermatids (D) were dissected out and pooled.
(20) The vascular capacitance and volume distensibility of the isolated dogfish gut and segments of dogfish arteries and veins were investigated.