Sample Cell Assembly
Sample Cell Assembly - Related Videos
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
13:05
Micropatterning and Assembly of 3D Microvessels
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Cited by 12 •
2016
This manuscript presents an injection molding method to engineer microvessels that recapitulate physiological properties of endothelium. The microfluidic-based process creates patent 3D vascular networks with tailorable conditions, such as flow, cellular composition, geometry, and biochemical gradients. The fabrication process and examples of potential applications are described.
02:41
Protein Complex Assembly
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2020
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes. Many viruses self-assemble into a fully functional unit using the infected host cell to...
03:01
Sample Preparation for Metabolomics: A Method to Prepare Cell Samples for Metabolite Profiling
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2023
This video describes a technique of preparing breast cancer cell samples for metabolite profiling. Breast cancer cells are treated with estradiol, which binds to the estrogen receptor alpha and causes change in the metabolite...
04:49
In Vitro Nuclear Assembly Using Fractionated Xenopus Egg Extracts
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Cited by 5 •
2008
Nuclear membrane assembly is an essential step in the cell division cycle; this process can be replicated in the test tube by combining Xenopus sperm chromatin, cytosol, and light membrane fractions. Complete nuclei are formed, including nuclear membranes with pore complexes, and these reconstituted nuclei are capable of normal nuclear processes.
FAQs
Compatible surfaces help maintain the sample’s intended condition during measurement. They provide the required boundaries for positioning the material while supporting consistent optical or analytical conditions. If the surfaces are unsuitable, the sample may not remain properly positioned or preserved, which can reduce measurement reliability and make observations more difficult to compare.
Alignment places the assembled cell correctly within the instrument’s measurement path. This positioning helps the instrument examine the intended region of the sample under consistent conditions. Careful alignment therefore supports comparable measurements across observations, whereas poor placement can change the analytical or optical conditions experienced by the sample and affect reproducibility.
Seals and holders stabilize the assembled components and help maintain the sample’s intended volume. They also reduce the risk of leakage or contamination during measurement. By keeping the sample contained and the cell secure, these components help preserve sample integrity and support reliable analysis of biological materials.
Changes in sample volume can alter the conditions under which the biological material is measured. Leakage or other volume changes may affect the consistency of the analytical or optical path and make separate observations less comparable. Securing the cell and preserving its contents therefore contributes directly to dependable measurements and reproducible biological results.
A basic workflow starts by placing the biological sample between compatible surfaces. The cell is then aligned within the instrument’s measurement path, after which seals or holders are secured to keep the assembly stable and contained. This sequence helps establish consistent measurement conditions while reducing risks of leakage, contamination, or sample-volume changes.
Before measurement, check that the sample is positioned between compatible surfaces, that the cell can be aligned with the instrument’s measurement path, and that seals or holders are properly secured. These checks address the main conditions needed for containment, sample preservation, and consistent optical or analytical measurement.
Careful assembly is important when researchers need reproducible observations of biomolecules, cells, or other biological materials. Properly positioned and secured samples provide more consistent conditions for optical or analytical measurements. This supports comparisons among observations and helps distinguish biological variation from changes introduced by leakage, contamination, misalignment, or altered sample volume.