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Production of Tissue Microarrays, Immunohistochemistry Staining and Digitalization Within the Human Protein Atlas
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An easy and reproducible method for rapid tissue macroarray block construction.

Sandra Lopez-Prades1,2, Gabriela A Caballero1,2, Iban Aldecoa1,2,3,4

  • 1Pathology Department, Biomedical Diagnostic Center (CDB), Hospital Clínic, Villarroel 170, 08036, Barcelona, Spain.

Virchows Archiv : an International Journal of Pathology
|November 19, 2025
PubMed
Summary
This summary is machine-generated.

We developed a rapid and easy method for constructing tissue macroarrays (Macro-TA), significantly reducing processing time and ensuring precise sample orientation. This technique simplifies the creation of Macro-TAs for pathology research and diagnostics.

Keywords:
Macro-TATMATissue arrayTissue macroarrayTissue microarray

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Area of Science:

  • Pathology
  • Biotechnology
  • Histology

Background:

  • Tissue macroarrays (Macro-TA) offer an alternative to tissue microarrays for specific research needs.
  • Current Macro-TA construction methods are often slow and present challenges with tissue core orientation.

Purpose of the Study:

  • To present a novel, rapid, and reproducible method for constructing tissue macroarrays.
  • To address the time-consuming nature and orientation difficulties associated with traditional Macro-TA preparation.

Main Methods:

  • A punch biopsy tool was utilized to create holes in a sponge scaffold and extract tissue cores from donor paraffin blocks.
  • Donor blocks were arranged according to a layout matching H&E slides for accurate case identification.
  • Tissue cores were inserted into the sponge scaffold, creating Macro-TAs with 9 to 48 cores in 4 to 25 minutes.

Main Results:

  • The new method allows for fast Macro-TA construction, reducing processing time by approximately 10-fold.
  • Precise tissue orientation is ensured throughout the construction process.
  • The method is simple, reproducible, and does not require specialized instrumentation.

Conclusions:

  • This innovative technique provides a fast, easy, and reliable approach to Macro-TA construction.
  • The method is highly suitable for both diagnostic and research pathology applications, improving efficiency and accuracy.