Bowman's Capsule
Bowman's Capsule - Related Videos
05:24
Teratoma Generation in the Testis Capsule
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Cited by 25 •
2011
Human pluripotent stem cells (hPSCs) have the potential to treat a myriad of different diseases. The utility of these cells lies in the fact that they can differentiate into any cell type in the body. Here we describe the teratoma assay, which is used to demonstrate the pluripotence of hPSCs.
02:17
Separation of Bacteria by Capsule Amount Using a Discontinuous Density Gradient
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2025
Source: Feltwell, T., et.al. Separating Bacteria by Capsule Amount Using a Discontinuous Density Gradient. J. Vis. Exp. (2019)This video demonstrates the use of a discontinuous density gradient to separate bacterial strains based on capsule amount. By centrifuging a transposon mutant library through the gradient, bacteria with different capsule densities localize to distinct layers. The separated fractions can then be collected for downstream analysis.
11:33
Microscopy and Staining: Gram, Capsule, and Endospore Staining
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2023
Source: Rhiannon M. LeVeque1, Natalia Martin1, Andrew J. Van Alst1, and Victor J. DiRita1 1 Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America Bacteria are diverse microorganisms found nearly everywhere on Earth. Many properties help distinguish them from each other, including but not limited to Gram-staining type, shape and arrangement, production of capsule, and formation of spores. To observe these properties, one...
02:25
Culturing and Isolating Capsule-Forming Pathogenic Bacterial Strains
0 Views •
2025
Source: Feltwell, T., et.al. Separating Bacteria by Capsule Amount Using a Discontinuous Density Gradient. J. Vis. Exp. (2019)This video demonstrates the preparation and characterization of bacterial strains with varying capsule production. Pathogenic strains carrying different mutations in capsule-related genes are cultured, grown in liquid media, and subjected to centrifugation to distinguish capsule phenotypes based on pellet density. Buffer treatment is used to wash and stabilize the cells...
08:22
Utilization of Capsules for Negative Staining of Viral Samples within Biocontainment
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Cited by 3 •
2017
This protocol provides instruction for negative staining virus samples which can easily be used in BSL-2, -3, or -4 laboratories. It includes the use of an innovative processing capsule, which protects the transmission electron microscopy grid and provides the user easier handling in the more turbulent environments within biocontainment.
FAQs
Blood pressure supplies the force that moves water and small dissolved substances from the blood across the glomerular filtration barrier. This pressure-driven movement creates filtrate within the capsule’s urinary space, establishing the starting material for urine formation. The process links cardiovascular pressure with the kidney’s ability to begin regulating body-fluid composition.
Selective retention keeps blood cells and most plasma proteins in the bloodstream while permitting water and small dissolved substances to enter the filtrate. This separation is essential because the kidney must begin processing fluid without allowing major blood components to pass freely into the nephron. Barrier changes can therefore signal impaired renal function.
Bowman’s capsule and the glomerulus together form the renal corpuscle, the site where filtration begins in a nephron. The capsule provides the urinary space that receives material crossing the filtration barrier, while the glomerulus supplies the blood-facing filtration surface. Their close structural relationship concentrates the first stage of urine formation in one region.
The capsule receives the newly formed filtrate before it moves into the proximal tubule. Thus, filtration at the renal corpuscle is an initial separation step rather than the complete production of urine. Following the filtrate into the proximal tubule helps place Bowman’s capsule within the larger nephron pathway responsible for processing body fluids.
Structural changes in Bowman’s capsule or its associated filtration barrier can provide clues about altered renal function. Because this region initiates ultrafiltration, abnormalities may affect the composition or formation of filtrate. Examining these changes helps researchers connect microscopic renal structure with disruptions in urine formation and the kidney’s contribution to homeostasis.
Filtration at Bowman’s capsule begins the kidney process that regulates the composition of body fluids. Water and small dissolved substances enter the nephron for subsequent processing, while blood cells and most plasma proteins remain in the blood. Studying this selective beginning clarifies how renal function supports stable internal conditions and how disease can disturb them.