Tissue Diffusion Chamber
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. AvaliaÃÃo morfofisiolÃgica da absorÃÃo e metabolizaÃÃo de Ãcidos graxos volÃteis pelo proventrÃculo de bovinos. / Morphophysiologic evaluation of the absorption and metabolism of volatile fatty acids by bovine forestomach.
About 60% of volatile fatty acids (VFA) produced in reticulorumen are absorbed in this compartment. The other 40% pass with the fluid phase to the omasum and are absorbed before entering the duodenum. Two experiments were carried out to determine the absorption surfaces and the VFA absorption and metabolism capacity of the bovine forestomach compartments. In
Publicado em: 2007
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2. Polar Indole-3-acetic Acid Diffusion in Nonliving and Model Systems
Polar indole-3-acetic acid movement was observed in killed plant segments and in artificial model systems. The polar diffusion of indole-3-acetic acid was observed in tissue killed by chemical or physical means in an agar-plant system and in a multicelled Plexiglas dialysis chamber containing hypocotyl tissue gradients or gradients of anion exchange material
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3. Concentrations of various antibiotics in serum and fluids accumulated in diffusion chambers implanted in various sites in rabbits.
Diffusion chambers with Millipore membranes were implanted in soft tissue, kidneys, and peritoneal and pleural cavities of rabbits. Single doses of azlocillin, cefazolin, and gentamicin were injected intramuscularly and ampicillin was administered orally 2--5 weeks after implantation. The concentrations of the respective drugs in simultaneously collected sam
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4. Observations on the Pathogenesis of Silicosis by Means of the Diffusion Chamber Technique
An attempt has been made to determine whether the diffusion chamber technique can be used to decide the validity of the silica solubility theory of the pathogenesis of silicosis. Small chambers were constructed from membranes of a pore size which allowed free passage of colloidal silicic acid and tissue fluids but which prevented the entry of host cells and
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5. Axonal transport of herpes simplex virions to epidermal cells: evidence for a specialized mode of virus transport and assembly.
To examine the transmission of herpes simplex virus (HSV) from axon to epidermal cell, an in vitro model was constructed consisting of human fetal dorsal root ganglia cultured in the central chamber of a dual-chamber tissue culture system separated from autologous skin explants in an exterior chamber by concentric steel cylinders adhering to the substratum t
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6. Hindered diffusion of high molecular weight compounds in brain extracellular microenvironment measured with integrative optical imaging.
This paper describes the theory of an integrative optical imaging system and its application to the analysis of the diffusion of 3-, 10-, 40-, and 70-kDa fluorescent dextran molecules in agarose gel and brain extracellular microenvironment. The method uses a precisely defined source of fluorescent molecules pressure ejected from a micropipette, and a detaile
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7. Reciprocal, Temporal Expression of SpeA and SpeB by Invasive M1T1 Group A Streptococcal Isolates In Vivo
The streptococcal pyrogenic exotoxins (Spes) play a central role in the pathogenesis of invasive group A streptococcal (GAS) infections. The majority of recent invasive GAS infections have been caused by an M1T1 strain that harbors the genes for several streptococcal superantigens, including speA, speB, speF, speG, and smeZ. However, considerable variation i
American Society for Microbiology.
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8. Action of Group A Streptococcus Extracellular Product(s) on the Connective Tissue of the Bovine Heart Valve
Group A streptococcal strains isolated from rheumatic fever patients were cultivated in the presence of bovine heart valves in a medium devoid of components from animal origin. Other group A streptococci and various bacteria were used as controls. The supernatant of these cultures was extracted and analyzed chemically and immunologically. The extracts prepar