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Videos de Conceptos Relacionados

Murine Nasal Lavage Fluid Collection without Blood Contamination05:12

Murine Nasal Lavage Fluid Collection without Blood Contamination

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The present protocol describes a novel method for avoiding blood contamination in murine nasal lavage fluid (NLF). Since this method ensures the NLF collection without blood contamination, it allows for more accurate detections of immunological components and various respiratory...
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Nasolacrimal Lavage as a Treatment for Ocular Surface Toxic Soup Syndrome03:40

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OSTSS leads to pooled inflammatory mediators in the tear film, causing symptoms like epiphora and discomfort. Here, we present a case where therapeutic nasolacrimal lavage every 2 months resolved epiphora and itchiness, suggesting its efficacy as a therapeutic intervention for OSTSS. Additionally, we report subjective improvements in symptoms in 3 additional...
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Saline Lavage for Sampling of the Canine Nasal Immune Microenvironment04:35

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Saline nasal lavage can be used to sample the canine nasal immune microenvironment. Because the approach is relatively non-invasive and does not disrupt the nasal tissues, it can be performed serially. Cells and proteins collected from the nasal lavage technique can be processed for various laboratory analyses.
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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber08:47

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A protocol for conducting a challenge in an allergen exposure chamber (AEC) facility is presented. AECs have proven to be safe and effective tools for the induction of allergic symptoms or as an endpoint in the efficacy testing of allergen immunotherapy due to their ability to maintain stable particle concentrations and environmental...
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Reduced Itraconazole Concentration and Durations Are Successful in Treating Batrachochytrium dendrobatidis Infection in Amphibians06:49

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Batrachochytrium dendrobatidis infection in amphibians can be eliminated using a reduced concentration (0.0025%) and shorter duration (five minute baths for six days) of itraconazole than is generally used. Less mortality and fewer negative side effects were observed using this modified treatment...
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Intranasal Administration of CNS Therapeutics to Awake Mice07:15

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A method to intranasally administer drugs to awake mice for the purpose of targeting the brain is described. This method allows for repeat dosing over long periods using intranasal administration of drug without anesthesia, and nose-to-brain delivery with minimal systemic...
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Video Experimental Relacionado

Updated: Jan 7, 2026

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Dinámica del sitio activo en las polimerasas de ARN.

Robert Landick1

  • 1Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA.

Cell
|March 16, 2004
PubMed
Resumen

Una nueva investigación revela que la polimerasa de ARN T7 de los bacteriófagos utiliza un ciclo de adición de nucleótidos similar al de las polimerasas de ADN. Este hallazgo ofrece información sobre las polimerasas de ARN complejas en otros organismos.

Área de la Ciencia:

  • La bioquímica es la bioquímica.
  • Biología Molecular Biología Molecular
  • Biología Estructural Biología Estructural

Sus antecedentes:

  • La ARN polimerasa T7 de los bacteriófagos es una enzima clave en la expresión génica viral.
  • Comprender los mecanismos de la ARN polimerasa es crucial para descifrar la transcripción celular.

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