Slide Staining
Slide Staining - Related Videos
04:00
Elastic Fiber Staining of Slide Sections: A Technique to Observe Gastric Cancer Metastasis
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2023
In this video, we demonstrate the elastic staining of sections obtained from gastrointestinal tumor tissue. This staining procedure enables visualization of fine elastic fibers and helps determine tumor cell invasion beyond the elastic lamina.
10:11
Immunohistochemical Staining of B7-H1 (PD-L1) on Paraffin-embedded Slides of Pancreatic Adenocarcinoma Tissue
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Cited by 43 •
2013
B7-H1 (PD-L1) and its binding to PD-1 provide a major tumor-induced immunosuppressive signal in the tumor’s microenvironment. An immunohistochemical staining technique to characterize the expression and localization of B7-H1 in pancreatic adenocarcinoma is described here.
06:36
Elastic Staining on Paraffin-embedded Slides of pT3N0M0 Gastric Cancer Tissue
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Cited by 4 •
2019
Here, we present a protocol of elastic staining to identify elastic fibers in pT3N0M0 gastric cancer tissues on formalin-fixed, paraffin-embedded sections. Subsequently, we describe a method to determine whether tumor cells invade beyond the elastic lamina.
06:14
In vitro Biofilm Formation in an 8-well Chamber Slide
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Cited by 62 •
2011
This article describes the procedure for the formation and visualization of a bacterial biofilm grown within an 8-well chamber...
10:04
Visualizing Soil Microorganisms via the Contact Slide Assay and Microscopy
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Bradley Schmitz Soil comprises the thin layer at the earth’s surface, containing biotic and abiotic factors that contribute to life. The abiotic portion includes inorganic particles ranging in size and shape that determine the soil’s texture. The biotic portion incorporates plant residues, roots, organic matter, and microorganisms. Soil microbe abundance and diversity is expansive, as...
FAQs
Dyes do not necessarily color every part of a specimen equally. Their chemical interactions with specimen components can produce selective coloration, causing structures such as nuclei, organelles, tissues, or microbial features to stand out from surrounding material. This selectivity is important because it allows investigators to distinguish structures and compare their organization under a microscope.
Fixation helps preserve the specimen's structure before staining begins. Maintaining that structure allows cells, tissues, and microorganisms to retain recognizable spatial relationships while dyes are applied and excess stain is removed. Without preservation, the features being examined could be more difficult to identify or compare accurately during microscopic observation.
The choice to apply one or more dyes depends on which features need to be distinguished in the specimen. A stain may emphasize a particular cellular component, while multiple dyes can provide contrasting colors for different structures. This approach supports examination of tissue organization, cell morphology, nuclei, organelles, or microbial features.
Washing removes excess stain that has not contributed useful selective coloration. This step helps reduce unwanted background color, so stained structures can be distinguished more clearly during microscopy. Effective contrast therefore depends not only on applying dye, but also on removing surplus material without losing the coloration needed to identify relevant cellular or microbial features.
A typical workflow begins by fixing the biological specimen to preserve its structure. One or more dyes are then applied so chemical interactions can selectively color relevant components. The slide is washed to remove excess stain, and the prepared specimen is examined under a microscope. This sequence supports clearer identification of structures that might otherwise appear transparent.
Stained slides support teaching, diagnostic investigation, histology, microbiology, and research on cellular structure and function. In histology, they can help reveal tissue organization; in microbiology, they can make microbial features easier to distinguish. Across these settings, the resulting contrast allows observers to identify and compare structures rather than viewing an indistinct specimen.
The technique can make tissue organization, cell morphology, nuclei, organelles, and microbial features easier to observe. These visual distinctions help investigators assess how structures are arranged and how different specimens compare. Because the method emphasizes features that may otherwise be transparent, it contributes to studying cellular structure and function as well as recognizing biological differences.