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Imaginal Discs: Hollow sacs of cells in Larva that form adult structures in insects during Biological metamorphosis.
 Science Education: Essentials of Biology 1

Drosophila melanogaster Embryo and Larva Harvesting and Preparation

JoVE Science Education

Drosophila melanogaster embryos and larvae are easy to manipulate and develop rapidly by mechanisms that are analogous to other organisms, including mammals. For these reasons, many researchers utilize fly embryos and larvae to answer questions in diverse fields ranging from behavioral to developmental biology. Prior to experimentation, however, the embryos and larvae must first be collected. This video will first demonstrate how "egg-laying cups" are used to collect Drosophila embryos on agar plates. The harvest and dechorionation of embryos will then be described. Next, the video will demonstrate how to identify and manipulate Drosophila in one of the three larval stages that follow the embryo stage. Finally, examples of some of the ways in which fly embryos and larvae are used in biological research are provided.

 JoVE Bioengineering

Using Microfluidics Chips for Live Imaging and Study of Injury Responses in Drosophila Larvae

1Department of Molecular, Cellular and Developmental Biology, University of Michigan, 2Department of Biomedical Engineering, University of Michigan, 3Life Sciences Institute, University of Michigan, 4Department of Cell and Developmental Biology, University of Michigan, 5Department of Mechanical Engineering, University of Michigan


JoVE 50998

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 JoVE Medicine

Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS

1iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus, 2Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, 3Food and Drug Administration (FDA), Center of Drug Evaluation Research - Office of Generic Drugs, 4Transplant Clinical Research, University of Cincinnati


JoVE 52424

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 JoVE Bioengineering

Synthesis of Thermogelling Poly(N-isopropylacrylamide)-graft-chondroitin Sulfate Composites with Alginate Microparticles for Tissue Engineering

1Department of Chemical Engineering, Rowan University, 2Department of Biological Sciences, Rowan University, 3Department of Biomedical Engineering, Drexel University


JoVE 53704

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 JoVE Genetics

The Use of Induced Somatic Sector Analysis (ISSA) for Studying Genes and Promoters Involved in Wood Formation and Secondary Stem Development

1School of Ecosystem and Forest Sciences, Faculty of Science, The University of Melbourne, 2Victorian AgriBiosciences Centre, La Trobe University R&D Park, 3College of Biological Sciences, Department of Plant Biology, University of California, Davis, 4Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria


JoVE 54553

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 Science Education: Essentials of Sensation and Perception

Motion-induced Blindness

JoVE Science Education

Source: Laboratory of Jonathan Flombaum—Johns Hopkins University

One thing becomes very salient after basic exposure to the science of visual perception and sensation: what people see is a creation of the brain. As a result people may fail to see things, see things that are not there, or see things in a distorted way.

To distinguish between physical reality and what people perceive, scientists use the term awareness to refer to what people perceive. To study awareness, vision scientists often rely on illusions-misperceptions that can reveal the ways that the brain constructs experience. In 2001, a group of researchers discovered a striking new illusion called motion-induced blindness that has become a powerful tool in the study of visual awareness.1 This video demonstrates typical stimuli and methods used to study awareness with motion-induced blindness.

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 Science Education: Essentials of Cognitive Psychology

Multiple Object Tracking

JoVE Science Education

Source: Laboratory of Jonathan Flombaum—Johns Hopkins University

In a staggeringly complex and engaging world, it is crucial to selectively process some stimuli at the expense of others. Experimental psychologists call this ability attention. Specifically, visual attention refers to the ability to selectively process aspects of a visual scene. Many paradigms used to study visual attention involve brief, punctuated, and repeated trials. However, everyday situations often place sustained demands on attention, as opposed to requiring only brief focus. For example, compare driving through busy city streets, which demands sustained attention, with crossing a busy street, which demands just a few moments of caution. To investigate sustained visual attention, experimental psychologists typically rely on a paradigm called multiple object tracking. This video demonstrates standard procedures for investigating sustained visual attention through multiple object tracking.

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