Immunohistochemistry · Pathology

What is the purpose of blocking steps in immunohistochemistry?

  1. To enhance overall tissue dehydration
  2. To remove all antigens from tissue sections
  3. To dissolve structural proteins in tissue
  4. To prevent non-specific antibody binding
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Correct answer: To prevent non-specific antibody binding

Blocking steps use proteins or serum to occupy nonspecific binding sites in tissues. This prevents antibodies from binding to unintended locations and reduces background staining.

Difficulty: Medium Question 10 of 20

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