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Immunohistochemistry (No Staining) severe

Antibody not validated for IHC application or tissue type

Symptom
Complete absence of staining with antibody that works in other applications. The antibody may not recognize native protein conformation present in tissue sections.
Common Causes
  1. 1 Antibody designed for denatured proteins (western blot) not recognizing native epitopes in IHC
  2. 2 Antibody not validated for specific tissue preparation method (FFPE vs. fresh frozen)
  3. 3 Epitope only accessible in denatured state, not in tissue architecture
  4. 4 Antibody specificity incompatible with IHC application requirements
Solutions
  1. 1 Check antibody datasheet to confirm IHC validation
  2. 2 Verify antibody is validated for specific tissue preparation (FFPE, fresh frozen, etc.)
  3. 3 Select antibodies with confirmed reactivity in native protein state
  4. 4 Consider alternative antibodies specifically validated for IHC with your tissue type
  5. 5 Test antibody in pilot experiment with known positive control tissue
Related Video (3)
Cell Signaling Technology ★ 85
Tissue Controls & More for Immunohistochemistry | CST Tech Tips
"Directly addresses antibody validation and control strategies (positive/negative/isotype controls) essential for diagnosing why an antibody fails in IHC despite working in other applications."
Bilibili (China-Accessible Mirrors) ★ 78
Immunohistochemistry on Paraffin-Embedded Sections (CST Demo)
"Step-by-step CST protocol demonstration including antigen retrieval, which is critical for exposing native epitopes that denatured-protein-targeting antibodies may fail to recognize."
Cell Signaling Technology ★ 72
Better IHC Step 1: Antigen Retrieval
"Focuses on antigen retrieval optimization to improve staining consistency, directly relevant to troubleshooting epitope accessibility issues that cause native-conformation-dependent antibody failures."
Source: abcam.com ↗
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