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General Laboratory Techniques

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Basic Methods in Cellular and Molecular Biology

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Model Organisms I

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Model Organisms II

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Essentials of
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 JoVE Application Notes

Advantages of the Trans-Blot® Turbo™ Transfer System Over Traditional Wet Tank and Semi-Dry Transfer Methods - ADVERTISEMENT


JoVE 3717

A demonstration of the advantages in speed, ease of use, and transfer efficiency of the Trans-Blot Turbo transfer system compared to conventional wet tank and semi-dry transfer methods.

 JoVE Neuroscience

A Simple Behavioral Assay for Testing Visual Function in Xenopus laevis

1Ophthalmology Department, Center for Vision Research, SUNY Eye Institute, Upstate Medical University


JoVE 51726

Xenopus laevis tadpoles prefer swimming on the white side of a black/white tank. This behavior is guided by their vision. Based on this behavior, we present a simple assay to test the visual function of tadpoles.

 JoVE Environment

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout (Salvelinus namaycush) from Its Prey

1Great Lakes Science Center, U. S. Geological Survey, 2Annis Water Resources Institute, Grand Valley State University, 3Daniel P. Haerther Center for Conservation and Research, Shedd Aquarium


JoVE 51496

A technique for laboratory estimation of net trophic transfer efficiency of polychlorinated biphenyl (PCB) congeners to piscivorous fish from their prey is presented. To maximize applicability of the laboratory results to the field, the piscivorous fish should be fed prey fish that are typically eaten in the field.

 JoVE Biology

Regular Care and Maintenance of a Zebrafish (Danio rerio) Laboratory: An Introduction

1Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical sciences, Edith Cowan University, 2Centre for Clinical Research in Neuropsychiatry, Graylands Hospital, University of Western Australia, 3McCusker Alzheimer's Research foundation, 4School of Medicine and Pharmacology, University of Western Australia, 5Department of Molecular and Biomedical Sciences, University of Adelaide, 6School of Biomedical Sciences, Curtin University of Technology, 7School of Psychiatry and Clinical Neurosciences, University of Western Australia


JoVE 4196

This protocol outlines regular maintenance and care to maintain optimal conditions for zebrafish husbandry. The video illustrates the protocol for system maintenance, regular housing, feeding, breeding, and raising of zebrafish larvae.

 JoVE Neuroscience

A Novel Method of Drug Administration to Multiple Zebrafish (Danio rerio) and the Quantification of Withdrawal

1Department of Psychology, MacEwan University


JoVE 51851

A novel method for reducing variability when exposing fish to drugs is explained. Fish exposed to various patterns of ethanol exposure were found to have altered anxiety levels during withdrawal in a light/dark scototaxic assay.

 JoVE Chemistry

The Use of Gas Chromatography to Analyze Compositional Changes of Fatty Acids in Rat Liver Tissue during Pregnancy

1Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton


JoVE 51445

Pregnancy leads to significant changes to the fatty acid composition of maternal tissues. Lipid profiles can be obtained via gas chromatography to allow identification and quantification of fatty acids in individual lipid classes among rats fed various high and low fat diets during pregnancy.

 JoVE Neuroscience

A Novel Light Damage Paradigm for Use in Retinal Regeneration Studies in Adult Zebrafish

1Department of Anatomy and Cell Biology, Wayne State University School of Medicine, 2Department of Opthalmology, Wayne State University School of Medicine


JoVE 51017

Multiple light damage protocols have been described to damage photoreceptors and consequently induce a retinal regeneration response in adult zebrafish. This protocol describes an improved method that can be used in pigmented animals and that damages the vast majority of rod and cone photoreceptors across the entire retina.

 JoVE Chemistry

Isolation and Chemical Characterization of Lipid A from Gram-negative Bacteria

1Section of Molecular Genetics and Microbiology, The University of Texas at Austin, 2Department of Chemistry and Biochemistry, The University of Texas at Austin, 3The Institute of Cellular and Molecular Biology, The University of Texas at Austin


JoVE 50623

Isolation and characterization of the lipid A domain of lipopolysaccharide (LPS) from gram-negative bacteria provides insight into cell surface based mechanisms of antibiotic resistance, bacterial survival and fitness, and how chemically diverse lipid A molecular species differentially modulate host innate immune responses.

 JoVE Neuroscience

Recording Behavioral Responses to Reflection in Crayfish

1Department of Biological Sciences, Brock University


JoVE 1956

We have developed two methods for studying effects of visual cues on behavior in the absence of tactile and chemical cues. One method involves videotaping responses of crayfish to reflective walls in an aquarium; the other examines effects of visual inputs provided by a live crayfish behind a transparent partition.

 JoVE Neuroscience

The Mouse Forced Swim Test

1Department of Psychiatry, University of Maryland School of Medicine, 2Tulane University School of Medicine, 3Department of Pharmacology and Experimental Therapeutics, University of Maryland School of Medicine, 4The Program in Neuroscience, University of Maryland


JoVE 3638

The forced swim test is validated as an experimental approach to assess potential antidepressant efficacy in rodents. Experimental animals are placed in a tank of water and escape-related mobility behavior is quantified. The common procedures for the mouse version of this test are described.

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