Biopsy Material Analysis
Biopsy Material Analysis - Related Videos
06:04
Aqueous Humor as a Liquid Biopsy for Retinoblastoma: Clear Corneal Paracentesis and Genomic Analysis
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Cited by 36 •
2021
The aqueous humor is a high-yield liquid biopsy for retinoblastoma, intraocular cancer that cannot be biopsied in vivo due to the risk of extraocular spread. Herein, a method for safely extracting aqueous humor via clear corneal paracentesis and steps for genomic analysis to identify prognostic biomarkers are presented.
14:11
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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Cited by 21 •
2016
We illustrate the application of 1H(15N,αγ)12C resonant nuclear reaction analysis (NRA) to quantitatively evaluate the density of hydrogen atoms on the surface, in the volume, and at an interfacial layer of solid materials. The near-surface hydrogen depth profiling of a Pd(110) single crystal and of SiO2/Si(100) stacks is described.
09:01
A Technique for Subcutaneous Abdominal Adipose Tissue Biopsy via a Non-diathermy Method
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Cited by 7 •
2017
We standardized an abdominal adipose tissue biopsy using a non-diathermy method performed under local anesthesia. Three cases of excessive post-operation bleeding out of 115 operations (2.61%) occurred.We conclude that an abdominal adipose tissue surgical biopsy using a non-diathermy method can be safely applied to healthy men.
11:23
Material Constants
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA In contrast to the production of cars or toasters, where millions of identical copies are made and extensive prototype testing is possible, each civil engineering structure is unique and very expensive to reproduce (Fig.1). Therefore, civil engineers must extensively rely on analytical modeling to design their structures. These models are simplified abstractions of reality and are used to...
08:49
Exosomal miRNA Analysis in Non-small Cell Lung Cancer (NSCLC) Patients' Plasma Through qPCR: A Feasible Liquid Biopsy Tool
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Cited by 59 •
2016
This protocol describes the feasibility to perform miRNA profiling in exosomes, released in plasma of NSCLC patients, through a commercial exosome isolation kit with Proteinase K and RNAse treatments, in order to avoid circulating miRNAs contamination and evaluate their biomarker features in NSCLC.
FAQs
The analysis links visible features, such as cell morphology and tissue organization, with molecular measurements of gene or protein expression. Comparing these levels helps researchers determine how cellular changes correspond to differentiation, migration, and tissue assembly. This connection is important because structural patterns alone may not explain the mechanisms guiding developmental change.
Patterns of gene or protein expression add molecular context to the features observed in biopsy material. When these patterns are compared with cell morphology and tissue organization, researchers can associate molecular activity with specific developmental conditions or stages. The combined evidence helps clarify how cells acquire specialized characteristics and contribute to organized tissues.
Comparisons across defined developmental conditions or time points reveal changes that a single sample cannot show. Researchers can track shifts in morphology, tissue arrangement, and gene or protein expression, then relate those shifts to ongoing differentiation, migration, or assembly. This approach helps distinguish developmental progression from condition-associated differences in experimental models.
Biopsy material can be prepared for microscopic, histological, or molecular analysis, with each approach contributing a different type of evidence. Microscopic and histological examination emphasizes cell morphology and tissue organization, whereas molecular analysis examines gene or protein expression. Using these approaches together provides a more complete view of developmental changes within the sample.
A typical workflow begins with preparing the removed tissue or cell sample for the intended analysis. Researchers then examine its structure, composition, or molecular features using microscopic, histological, or molecular methods. Finally, they compare the findings across developmental conditions or time points to connect observed changes with cellular and tissue-level processes.
In developmental biology, this analysis supports studies of normal development, developmental disorders, tissue regeneration, and experimental models of organ formation. Researchers use the resulting structural and molecular observations to evaluate how cells differentiate, migrate, and assemble into tissues. Its value lies in relating measurable sample features to developmental outcomes across different experimental settings.