Ultrasonographic appearance of intestinal roundworms in a dog and a cat     

Wigger A  Peppler C  Kramer M 《The Veterinary record》2007,161(6):200-201

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Immunopathology of <Emphasis Type="Italic">Dirofilaria immitis</Emphasis> Infection     

Simón F  Kramer LH  Román A  Blasini W  Morchón R  Marcos-Atxutegi C  Grandi G  Genchi C 《Veterinary research communications》2007,31(2):161-171

Heartworm disease caused by Dirofilaria immitis affects canine and feline hosts, with infections occasionally being reported in humans. Studies have shown that both dirofilarial antigens and those derived from its bacterial endosymbiont Wolbachia, interact with the host organism during canine, feline and human infections and participate in the development of the pathology and in the regulation of the host’s immune response. Both innate and acquired immune responses are observed and the development of the acquired response may depend on the host and, or on its parasitological status. This review aims at illustrating current research on the role of both D. immitis and Wolbachia, in the immunology and immunopathology of dirofilariosis.  相似文献   

Syntheses of (Z,E)-5,7-dodecadienol and (E,Z)-10,12-hexadecadienol,lepidoptera pheromone components,via zinc reduction of enyne precursors. test of pheromone efficacy against the Siberian moth     

Khrimian A  Klun JA  Hijji Y  Baranchikov YN  Pet'ko VM  Mastro VC  Kramer MH 《Journal of agricultural and food chemistry》2002,50(22):6366-6370

Efficient syntheses of (Z,E)-5,7-dodecadienol, a pheromone component of the Siberian moth, Dendrolimus superans sibiricus, and (E,Z)-10,12-hexadecadienol, a pheromone component of various Lepidoptera pheromones, were accomplished by cis reduction of the corresponding enynols with activated zinc. The most energetic reagent was zinc galvanized with copper and silver (Zn/Cu/Ag) that achieved rapid and high-yield reduction in methanol-water. The stereoselectivity of semi-hydrogenation was > or =98%. A process whereby zinc dust was continuously activated throughout the reduction with an acid was also satisfactory (95-98% cis). Field evaluation of the 1:1 mixture of (Z,E)-5,7-dodecadienol and (Z,E)-5,7-dodecadienal with the Siberian moth in Russia showed that the rubber septa pretreated with compound and stored at -80 degrees C were as effective as freshly treated septa. Moth responses to septa aged in open air indicated that lure effectiveness declined significantly after 2 weeks of aging. Thus, if rubber septa are used as pheromone dispensers in Siberian moth traps monitoring, they should be replaced biweekly with fresh septa for optimal trap effectiveness.  相似文献   

Zur pflanzenphysiologischen Bedeutung des Selens. II. Mitteilung: Untersuchungen zum Selenquotienten im Pflanzentest     

W. Kramer  W. Ziechmann 《植物养料与土壤学杂志》1972,132(3):199-208

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Directional Differences in Pigeon Homing     

Kramer G  Pratt JG  VON St Paul U 《Science (New York, N.Y.)》1956,123(3191):329-330

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Aromatic cross-links in insect cuticle: detection by solid-state 13C and 15N NMR   总被引：2，自引：0，他引：2  

J Schaefer  K J Kramer  J R Garbow  G S Jacob  E O Stejskal  T L Hopkins  R D Speirs 《Science (New York, N.Y.)》1987,235(4793):1200-1204

Cross-polarization magic-angle-spinning nuclear magnetic resonance spectroscopy has been used to determine insect cuticle composition and cross-link structure during sclerotization or tanning. Unsclerotized cuticle from newly ecdysed pupae of the tobacco hornworm, Manduca sexta L., had a high protein content with lesser amounts of lipid and chitin. Concentrations of chitin, protein, and catechol increased substantially as dehydration and sclerotization progressed. Analysis of intact cuticle specifically labeled with carbon-13 and nitrogen-15 revealed direct covalent linkages between ring nitrogens of protein histidyl residues and ring carbons derived from the catecholamine dopamine. This carbon-nitrogen adduct was present in chitin isolated from cuticle by alkaline extraction and is probably bound covalently to chitin. These data support the hypothesis that the stiffening of insect cuticle during sclerotization results primarily from the deposition of protein and chitin polymers and their crosslinking by quinonoid derivatives of catecholamines.  相似文献   

SEEDS FOR THE STUDY OF ROOT AND ROOT-HAIR STRUCTURE IN BOTANICAL LABORATORIES     

Kramer J 《Science (New York, N.Y.)》1939,90(2328):140-141

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RELATIVE EFFICIENCY OF ROOTS AND TOPS OF PLANTS IN PROTECTING THE SOIL FROM EROSION     

Weaver JE  Kramer J 《Science (New York, N.Y.)》1935,82(2128):354-355

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THE EFFECT OF TEMPERATURE ON THE LIFE CYCLE OF MUSCA DOMESTICA AND CULEX PIPIENS     

Kramer SD 《Science (New York, N.Y.)》1915,41(1067):874-877

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Zond 5: sketches and guesses     

Kramer SB 《Science (New York, N.Y.)》1968,162(3859):1223

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