Stacking Technique
Stacking Technique - Related Videos
09:38
Scaling of Engineered Vascular Grafts Using 3D Printed Guides and the Ring Stacking Method
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Cited by 6 •
2017
Scalable engineered blood vessels would improve clinical applicability. Using easily sizable 3D-printed guides, rings of vascular smooth muscle were created and stacked into a tubular form, forming a vascular graft. Grafts can be sized to meet the range of human coronary artery dimensions by simply changing the 3D-printed guide size.
07:21
Production of Adeno-Associated Virus Vectors in Cell Stacks for Preclinical Studies in Large Animal Models
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Cited by 17 •
2021
Here we provide a detailed procedure for large-scale production of research-grade AAV vectors using adherent HEK 293 cells grown in cell stacks and affinity chromatography purification. This protocol consistently yields >1 x 1013 vector genomes/mL, providing vector quantities appropriate for large animal studies.
10:53
Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
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Cited by 2 •
2016
The key steps of living anionic polymerization of phenyl glycidyl ether (PheGE) on methoxy-polyethylene glycol (mPEG-b-PPheGE) are described. The resulting block copolymer micelles (BCMs) were loaded with doxorubicin 14% (wt%) and sustained release of drug over 4 days under physiologically relevant conditions was obtained.
06:41
Enhancing Density Maps by Removing the Majority of Particles in Single Particle Cryogenic Electron Microscopy Final Stacks
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Cited by 1 •
2024
An advanced particle selection method for cryo-EM, namely CryoSieve, improves density map resolution by removing a majority of particles in final stacks, as demonstrated through its application on a real-world dataset.
04:14
Lab Techniques - Concepts
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2020
Measurement Accuracy The ability to repeat an experiment and get the same results, or reproducibility, is essential in scientific research. However, it’s impossible to repeat an experiment if you don’t know how you did it. Thus, scientists keep detailed records of their experiments in lab notebooks. These records include important information like the amount of each material used and descriptions of each step of the procedure. Equipment, like balances and volumetric or graduated glassware, is...
FAQs
Conductivity differences among the sample, leading electrolyte, and terminating electrolyte produce different electric-field strengths during migration. These field changes alter how quickly ions move, causing the sample components to compress into a narrower zone. The resulting concentration of analytes supports sharper separation features and can improve detection of compounds present at low abundance.
The leading and terminating electrolytes establish the conductivity boundaries needed for ion focusing. Their relationship with the sample controls the electric-field conditions experienced by migrating components. Together, they help compress analytes into a concentrated band before separation, while preserving the chemical identity of the compounds being analyzed.
Electric-field strength determines how rapidly ions migrate through the electrophoretic system. Differences in field strength between the sample and surrounding electrolytes create the movement conditions that narrow the analyte zone. This physical concentration increases the amount of analyte presented within a small region, supporting stronger signals without chemically modifying the sample.
Separation distinguishes components according to their migration behavior, whereas stacking first prepares those components for more effective separation by concentrating them into a narrow zone. This added focusing stage can produce sharper peaks and improve resolution. It also increases detectability, making the method especially useful when analyte abundance is limited.
The sample must be positioned in relation to a leading electrolyte and a terminating electrolyte so that the intended conductivity differences are present. Applying the electric field then initiates ion migration and band compression before the separation stage. This sequence connects the electrolyte arrangement with the final sharpness and detectability of analyte signals.
The technique is useful in capillary electrophoresis and related separation methods when analysts need improved sensitivity, resolution, or detectability. It can help reveal low-abundance chemical compounds and support more reliable qualitative or quantitative analysis. Because stacking concentrates analytes without changing their chemical identity, it serves as a preparatory enhancement rather than a chemical transformation.