Positively Charged Glass Slides
Positively Charged Glass Slides - Related Videos
02:42
Formal Charges
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2020
In some cases, there are seemingly more than one valid Lewis structures for molecules and polyatomic ions. The concept of formal charges can be used to help predict the most appropriate Lewis structure when more than one reasonable structure exists. Calculating Formal Charge The formal charge of an atom in a molecule is the hypothetical charge the atom would have if the electrons in the bonds are evenly distributed between the atoms. Alternatively, formal charge results when from the number...
03:27
Ions and Ionic Charges
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2020
In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element — remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons to form electrically charged particles called ions. When...
01:28
The Looking Glass Self
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2025
The concept of the looking-glass self describes how an individual's self-concept is shaped by their perception of how others see them. This psychological theory, first introduced by sociologist Charles Horton Cooley in 1902, posits that self-identity emerges in a social context and is influenced by the judgments—real or imagined—of others.Research suggests that individuals frequently overestimate how positively others perceive them. This is particularly evident in physical self-perception,...
09:12
Electric Charge in a Magnetic Field
0 Views •
2023
Source: Andrew Duffy, PhD, Department of Physics, Boston University, Boston, MA This experiment duplicates J.J. Thomson's famous experiment at the end of the 19th century, in which he measured the charge-to-mass ratio of the electron. In combination with Robert A. Millikan's oil-drop experiment a few years later that produced a value for the charge of the electron, the experiments enabled scientists to find, for the first time, both the mass and the charge of the electron, which are key...
02:57
Mounting Adult Drosophila Brains: A Method to Prepare Slides for Confocal Imaging
0 Views •
2023
This video describes a method of mounting intact brains from adult flies under a bridge slide and shows the protocol performed on immunostained brains for fluorescent microscopy.
FAQs
Electrostatic attraction is the central adhesion mechanism: the treated surface interacts with negatively charged tissue constituents, including nucleic acids and acidic proteins. This interaction helps sections remain positioned when processing steps involve hydration, washing, or staining. For cancer research, maintaining placement preserves the continuity of material needed to examine morphology, biomarker expression, and cellular organization.
Section retention matters because loss during processing can remove or disturb material required for later evaluation. Positively charged glass slides support more consistent sample placement through hydration, washing, and staining, rather than allowing sections to detach. That stability is especially relevant when investigators compare tumor morphology or biomarker expression across preparations and need the tissue to remain available for analysis.
Negatively charged constituents provide the interaction sites for the coated surface. The overview identifies nucleic acids and acidic proteins as important examples in tissue. Their electrostatic interaction with the slide helps explain why sections can remain attached during subsequent processing. This chemical basis connects slide performance to preservation of tissue architecture and molecular targets examined in cancer studies.
In a cancer-tissue workflow, the slides serve as the stable support for sections or cellular preparations that will undergo histopathology, immunohistochemistry, or molecular assays. The relevant sequence is sample placement followed by processing steps such as hydration, washing, and staining. Retaining the material on the slide allows the selected assay to be performed on a consistently located preparation.
Histopathology can benefit from retained sections because tissue remains available for assessing tumor morphology and cellular organization. Immunohistochemistry can similarly benefit when the preparation must remain in place during staining to evaluate biomarker expression. Molecular assays are another identified application. Across these uses, reliable adhesion helps maintain the physical sample needed for interpretation.
These slides are particularly relevant when biopsy material is limited or fragile. Losing part of a section during processing can reduce the material available for downstream observation, whereas reliable adhesion helps preserve the preparation. In cancer research, that stability supports reproducibility when investigators evaluate tumor features, biomarker expression, or cellular organization from constrained clinical specimens.