Optimal Cutting Temperature
Optimal Cutting Temperature - Related Videos
09:09
Preparation of Human Tissues Embedded in Optimal Cutting Temperature Compound for Mass Spectrometry Analysis
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Cited by 3 •
2021
Sphingolipids are bioactive metabolites with well-established roles in human disease. Characterizing alterations in tissues with mass-spectrometry can reveal roles in disease etiology or identify therapeutic targets. However, the OCT-compound used for cryopreservation in biorepositories interferes with mass-spectrometry. We outline methods to analyze sphingolipids in human tissues embedded in OCT with LC-ESI-MS/MS.
06:00
Optimized and Simplified Technique for the Production and Culture of Precision-Cut Liver Slices
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2024
A protocol for the production and culture of Precision-cut Liver Slices (PCLS) for the study of mouse livers. The article focuses on key aspects of the protocol, which only requires standard laboratory equipment with access to a vibratome and allows survival of PCLS for a minimum of 4 days.
10:11
Collection and Long-Term Maintenance of Leaf-Cutting Ants (Atta) in Laboratory Conditions
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Cited by 6 •
2022
Here, a protocol is described to successfully collect and maintain healthy Atta (Hymenoptera: Formicidae) ant colonies in laboratory conditions. Additionally, different nest types and configurations are detailed together with possible experimental procedures.
01:08
Brick Cutting Techniques
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2024
Brick-cutting techniques involve various tools and methods to shape bricks for construction. A mason's hammer with a chisel-pointed end is used for basic shaping through sharp, precise strikes. For more complex shapes requiring higher precision, a power saw with a water-cooled diamond blade is used. Cut bricks are categorized by size. Bricks cut to half their original length are called half-bats, while those cut to three-fourths their length are known as three-fourth bats. Special types of cut...
01:17
Cut-off Frequency of BJT
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2024
Cut-off frequencies in Bipolar Junction Transistors (BJTs) mark the transition between the signal's pass band and stop band, influencing their performance in amplifying or attenuating frequencies. These frequencies are crucial for designing BJTs to meet specific operational requirements in electronic circuits. Alpha Cut-Off Frequency: Pertinent to the common-base configuration, the alpha cut-off frequency defines the upper-frequency limit at which the current gain, alpha, remains stable. As...
FAQs
Water solubility makes OCT useful beyond the cutting step. After the specimen has been sectioned, the embedding matrix can be removed during aqueous staining procedures rather than remaining as a permanent support. This transition allows the same stabilized section to proceed into microscopy workflows while limiting the embedding material’s interference with stain-based analysis.
The frozen OCT matrix stabilizes tissue by surrounding the specimen and filling spaces that could otherwise reduce support during cutting. Its firmness gives a chilled blade a continuous medium to pass through, helping produce thin sections while maintaining tissue architecture. That mechanical support is especially important when microscopic interpretation depends on spatial relationships among cells.
The value of OCT embedding extends beyond morphology because the approach supports detection of cellular antigens, enzymes, and nucleic acids. Preserving these targets within thin frozen sections enables microscopy-based analyses that combine tissue location with molecular or biochemical information. Consequently, investigators can examine structure and selected cellular features in the same biological specimen.
Optimal Cutting Temperature is particularly relevant when the research question depends on retaining tissue organization during analysis. The surrounding matrix supports the sample rather than replacing its architecture, so sectioning can expose defined regions for microscopy. This makes the technique useful for studying cellular distributions, developmental patterns, and disease-related changes in tissue.
An OCT-based workflow begins by placing the specimen within the compound so it is surrounded and supported, followed by freezing the matrix. A cryostat then uses a chilled blade to cut thin sections. During subsequent aqueous staining, the OCT can be removed, leaving sections ready for microscopy and analysis.
The core setup consists of a biological specimen, OCT compound, a freezing step, and a cryostat equipped with a chilled blade. Together, these components provide support, solidification, and controlled sectioning. Aqueous staining supplies the later condition for removing the matrix and preparing sections for microscopy and analysis.
Biologists use Optimal Cutting Temperature embedding in histology, immunofluorescence, developmental studies, and investigations of disease-related tissue changes. Its value lies in linking supported frozen sectioning with microscopy and detection of antigens, enzymes, or nucleic acids. This combination helps researchers relate molecular or cellular findings to tissue architecture within biological samples.