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Methylene Blue: A compound consisting of dark green crystals or crystalline powder, having a bronze-like luster. Solutions in water or alcohol have a deep blue color. Methylene blue is used as a bacteriologic stain and as an indicator. It inhibits Guanylate cyclase, and has been used to treat cyanide poisoning and to lower levels of Methemoglobin.

Cell Structure - Student Protocol

JoVE 10588

Visualizing Onion and Human Cells
In this experiment you will prepare different types of cells from a plant and animal, onion and human respectively, and then visualize them under a microscope. HYPOTHESES: The experimental hypothesis is that the cells will appear different in overall shape and membrane structure, but there will be some shared similar…

 Lab Bio

Cell Structure- Concept

JoVE 10587

Background

Cells represent the most basic biological units of all organisms, whether it be simple, single-celled organisms like bacteria, or large, multicellular organisms like elephants and giant redwood trees. In the mid 19th century, the Cell Theory was proposed to define a cell, which states:



Every living organism is made up of one or more cells.
The cells…

 Lab Bio

Cell Structure - Prep Student

JoVE 10631

Visualizing Onion and Cheek Cells
Immediately before the experiment, wash and peel onion bulbs for the class.
Remove the entire brown outer skin and cut the onion in half with a knife. Pull apart the layers of the onion. The thin, nearly transparent film layers within the onion will be used by the students.
Place the onion film into a Petri…

 Lab Bio

Zebrafish Breeding and Embryo Handling

JoVE 5150

Zebrafish (Danio rerio) are an important model organism that is particularly valuable for research in developmental biology. Zebrafish are extremely fertile and can produce hundreds of progeny per week, so it is relatively easy to collect a large number of embryos for high sample numbers. Furthermore, zebrafish undergo rapid development and embryos are transparent, allowing for easy…

 Biology II

Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos

1Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS, UMR 535, Université Montpellier, 2Centre d'études d'agents Pathogènes et Biotechnologies pour la Santé, CNRS, FRE 3689, Université Montpellier, 3Unité de Formation et de Recherche des Sciences de la Santé, EA3647-EPIM, Université Versailles St Quentin

JoVE 53130

 Immunology and Infection

Flow Cytometry-based Assay for the Monitoring of NK Cell Functions

1Childrens Hospital, Department of Pediatric Stem Cell Transplantation and Immunology, Johann Wolfgang Goethe-University, 2LOEWE Center for Cell and Gene Therapy, Johann Wolfgang Goethe-University, 3Institute for Cancer Research, Department of Cancer Immunology, Oslo University Hospital, Radiumhospital, 4The KG Jebsen Center for Cancer Immunotherapy, Institute of Clinical Medicine, University of Oslo

JoVE 54615

 Immunology and Infection

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

1Bioprocesses Department, Laboratory of Environmental Biotechnology, Unidad Profesional Interdisciplinaria de Biotecnología, Instituto Politécnico Nacional, 2Laboratory of Molecular Biology, Escuela Superior de Medicina, Instituto Politécnico Nacional

JoVE 52956

 Environment

Multimodal Quantitative Phase Imaging with Digital Holographic Microscopy Accurately Assesses Intestinal Inflammation and Epithelial Wound Healing

1Department of Medicine B, University Hospital Münster, 2Institute of Palliative Care, University Hospital Münster, 3Biomedical Technology Center, University of Münster, 4Department of Gastroenterology, Klinikum Bielefeld

JoVE 54460

 Medicine

Efficient Gene Delivery into Multiple CNS Territories Using In Utero Electroporation

1Department of Biochemistry and Molecular Biology, Hotchkiss Brain Institute, Alberta Children’s Hospital Research Institute, University of Calgary, 2Department of Medical Genetics, Alberta Children’s Hospital Research Institute, Hotchkiss Brain Institute, University of Calgary

JoVE 2957

 Neuroscience
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