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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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A tissue membrane is a thin layer of cells that covers the outside of the body, the organs, internal passageways that lead to the exterior of the body, and the lining of the moveable joint cavities. There are two basic types of tissue membranes— connective tissue and epithelial membranes.
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Manual Construction of a Tissue Microarray using the Tape Method and a Handheld Microarrayer
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Making a Tissue Microarray.

Matthew Koo1, Jill M Squires1, Daphne Ying1

  • 1Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|December 13, 2018
PubMed
Summary

Tissue microarray (TMA) technology enables high-throughput molecular analysis by consolidating multiple tissue samples into a single block. This cost-effective method facilitates simultaneous comparative profiling, optimizing research efficiency.

Keywords:
Comparative analysisImmunohistochemistryMolecular profilingPathologyResearchTissue microarray

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Area of Science:

  • Biotechnology
  • Molecular Pathology
  • Histology

Background:

  • Tissue microarray (TMA) is a crucial technique in molecular pathology.
  • It allows for high-throughput analysis of numerous tissue samples simultaneously.
  • TMA conserves valuable tissue and reagents, making it cost-effective.

Purpose of the Study:

  • To discuss the underlying theory and principles of tissue microarray construction.
  • To provide an overview of TMA design and its advantages/disadvantages.
  • To present a sample protocol for TMA block preparation.

Main Methods:

  • Procurement of multiple donor tissue cores.
  • Transfer of cores into a recipient TMA block.
  • Simultaneous molecular profiling under standardized conditions.

Main Results:

  • TMA facilitates differential and comparative molecular profiling.
  • The method ensures theoretically identical performance conditions for all samples.
  • A sample protocol for TMA construction is detailed.

Conclusions:

  • Tissue microarray is an efficient, high-throughput, and economical method for molecular analysis.
  • TMA technology supports simultaneous comparative studies of multiple tissues.
  • Understanding TMA design and construction is key to its effective application in research.