Results 171 to 180 of about 28,264 (210)
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Microbodies (peroxisomes) in the toad, Bufo marinus
Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1970Microbodies (peroxisomes), a group of cytoplasmic organelles enriched in catalase, are demonstrated in the toad, Bufo marinus, by light and electron microscopy by means of a cytochemical staining procedure that demonstrates the peroxidatic activity of catalase with diaminobenzidine (DAB).
F, Roels, B, Schiller, S, Goldfischer
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Hyperoxia in the toad, Bufo marinus marinus (L.)
1979The respiration and blood acid-base regulation of pufo marinus Was examined in nine unrestrained animals during normoxia (PIO₂ = 0.2 atm) and hyperoxia (PIO₂ = 0.6 atm). Arterial blood was serially sampled just prior to O₂ onset, at 1/2, 1, 11/2, 3, 7 and 20 h during hyperoxia and 3 h after exposure, and analyzed for PaO₂, PaCO₂, pHa and [HCO₃⁻]a ...
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Hemoglobin functions in the blood of Bufo marinus
Journal of Cellular Physiology, 1966AbstractThe effects of three physical‐chemical factors, temperature, hydrogen ion concentration, and partial pressure of oxygen, on the respiratory functions of blood of the toad (Bufo marinus) have been studied.Measurements of oxygen affinity of hemoglobin in whole blood were measured tonometrically by a method devised for small quantities of blood ...
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Cytochemistry of the Blood Basophil of Bufo marinus
Journal of Herpetology, 1988The morphology and cytochemistry of the blood basophil of Bufo marinus are characterized, and compared and contrasted to the basophil from several other amphibians and with the mammalian basophil. The basophil of B. marinus contains at least one type of mucopolysaccharide and an acid mu- copolysaccharide, possibly heparin, within the cytoplasmic ...
M. Samuel Cannon +3 more
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Ammonium production in the toad Bufo Marinus Marinus (L.)
1976The effect of exposure to increased carbon dioxide tensions on ammonium excretion by the urinary bladder of the toad Bufo marinus was studied. Ammonium excretion had been previously demonstrated in NH₄Cl-induced acidotic toads. No significant change in ammonium concentration was observed in four toads exposed to 1 (±0.05%) CO₂ for a 24 hour period.
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CO₂ regulation in the toad, Bufo marinus marinus (L.)
1976Blood acid-base regulation of Bufo marinus marinus (L.) was examined in hydrated and dehydrated toads under normal and hypercapnic conditions. Serial samples of arterial blood were taken from free-moving unanaesthetized animals and analyzed for pH (pHa), PCO₂ (PaCO₂, torr) and HCO₃ (mM/1).
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Motor innervation of the toad iris (Bufo marinus)
American Journal of Physiology-Legacy Content, 1976The sphincter pupillae muscle cells in the iris of Bufo marinus contract autonomously in response to bright light, causing a rapid constriction of the pupil. A strong sympathetic beta-adrenergic inhibition of the sphincter pupillae is apparent in this species. The inhibitory fibers can originate in the second, third, or fourth ventral spinal roots. No
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The innervation of the cutaneous artery in the toad Bufo marinus
General Pharmacology: The Vascular System, 1976Abstract 1. 1. The autonomic innervation of the cutaneous artery of a toad (Bufo marinus) was investigated by techniques of vascular perfusion and by the fluorescence histochemical technique for the demonstration of adrenergic neurons. 2. 2. The cutaneous artery was innervated by excitatory adrenergic nerve fibres originating in the cervical ...
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The autonomic innervation of the stomach of a toad (Bufo marinus)
Comparative Biochemistry and Physiology, 19691. 1. Gastric smooth muscle of the toad Bufo marinus is innervated via splanchnic sympathetic, cervical sympathetic and vagal parasympathetic nervous pathways. 2. 2. The cervical sympathetic outflow is excitatory to the stomach. The nerve fibres are probably cholinergic. 3. 3.
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Autonomic innervation of the lung musculature of a toad (Bufo marinus)
Comparative and General Pharmacology, 1971Abstract 1. 1. Effects of nerve stimulation on isolated lungs of Bufo marinus were studied. 2. 2. The vagus nerves provide inhibitory but not excitatory nerve-fibres to the lung muscle. The inhibitory innervation is not cholinergic or adrenergic. 3. 3. The cervical sympathetic chains distribute both adrenergic excitatory and cholinergic
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