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Intermediate Filaments: Cytoplasmic filaments intermediate in diameter (about 10 nanometers) between the microfilaments and the microtubules. They may be composed of any of a number of different proteins and form a ring around the cell nucleus.
 JoVE Bioengineering

From Voxels to Knowledge: A Practical Guide to the Segmentation of Complex Electron Microscopy 3D-Data

1Life Sciences Division, Lawrence Berkeley National Laboratory, 2Joint Bioenergy Institute, Physical Biosciences Division, Lawrence Berkeley National Laboratory, 3National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory


JoVE 51673

 JoVE Neuroscience

Purification of Mouse Brain Vessels

1Collège de France, Center for Interdisciplinary Research in Biology (CIRB), Centre National de la Recherche Scientifique CNRS, Unité Mixte de Recherche 7241, Institut National de la Santé et de la Recherche Médicale, 2Centre Interdisciplinaire de Recherche en Biologie, 3MEMOLIFE Laboratory of Excellence and Paris Science, Lettre Research University, 4Université Paris Descartes, Faculté de Pharmacie, Université Paris Diderot


JoVE 53208

 Science Education: Essentials of Environmental Science

Nutrients in Aquatic Ecosystems

JoVE Science Education

Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University

Nitrogen and phosphorus are essential plant nutrients found in aquatic ecosystems and both are monitored as a part of water quality testing because in excess amounts they can cause significant water quality problems. 

Nitrogen in water is measured as the common form nitrate (NO3-) that is dissolved in water and readily absorbed by photosynthesizers such as algae. The common form of phosphorus measured is phosphate (PO43-), which is strongly attracted to sediment particles as well as dissolved in water. In excess amounts, both nutrients can cause an increase in aquatic plant growth (algal bloom, Figure 1) that can disrupt the light, temperature, and oxygen levels in the water below and lead to eutrophication and hypoxia (low dissolved oxygen in water) forming a “dead zone” of no biological activity. Sources of nitrates and phosphorus include wastewater treatment plants, runoff from fertilized lawns and agricultural lands, faulty septic systems, animal manure runoff, and industrial waste discharge. Figu

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 JoVE In-Press

A Protocol of Manual Tests to Measure Sensation and Pain in Humans

1Physical Therapy, Chronic Pain Research Consortium, Duquesne University, 2Biological Sciences, Chronic Pain Research Consortium, Duquesne University, 3Chronic Pain Research Consortium, Duquesne University, 4Psychology, Chronic Pain Research Consortium, Duquesne University, 5Occupational Therapy, Chronic Pain Research Consortium, Duquesne University

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JoVE 54130

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 JoVE Developmental Biology

Technique to Target Microinjection to the Developing Xenopus Kidney

1Department of Pediatrics, Pediatric Research Center, University of Texas McGovern Medical School, 2Program in Genes & Development, University of Texas Graduate School of Biomedical Sciences, 3Program in Cell & Regulatory Biology, University of Texas Graduate School of Biomedical Sciences, 4Department of Genetics, University of Texas MD Anderson Cancer Center


JoVE 53799

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