Open the original sources
Evidence and references
Use this page to trace key recommendations and check the relevant manufacturer protocols, methodological papers and reporting guidance directly.
How sources are prioritized
Product-specific instructions for the exact sample workflow, lysis/assay reagent, antibody, gel, membrane and device take highest priority, followed by the manufacturer’s general technical protocol, then peer-reviewed methods and reporting guidance. A general webpage cannot override validated conditions for the product in hand.
Thermo Fisher Scientific — Blocking Buffers for Western Blot and ELISA
Official guidance showing that blocker choice depends on the antibody and detection system, including milk/BSA tradeoffs and phosphoprotein or avidin/biotin compatibility.
Open original source →Cell Signaling Technology — Where to Find the Recommended Primary-Antibody Dilution Buffer
Product-specific guidance that the exact antibody datasheet or protocol should determine whether milk or BSA is used as the primary-antibody dilution buffer.
Open original source →Cell Signaling Technology — Phospho-p53 (Ser15) Blocking/Diluent Example
Concrete phospho-antibody example in which a milk-validated condition performs better than BSA, illustrating why phosphoprotein status alone cannot determine the blocker.
Open original source →Thermo Fisher Scientific — Quantitative Western Blot Analysis
Official guidance on sample load, antibody concentration, saturation, background and assay linearity in quantitative Western blotting.
Open original source →Thermo Fisher Scientific — RIPA Lysis and Extraction Buffer
Product-specific reference for this RIPA formulation, including extraction scope, composition, inhibitor requirements and downstream-compatibility considerations.
Open original source →Cell Signaling Technology — Preparing Tissue Extracts for Western Blot
Manufacturer tissue-preparation example covering cold handling, mechanical homogenization, sonication and clarification. Device-specific quantities and programs are treated as examples, not universal settings.
Open original source →Thermo Fisher Scientific — Protein Assays & Quantitation Troubleshooting
Official compatibility guidance for protein assays in the presence of detergents, reducing agents, chelators and other sample-matrix components.
Open original source →LI-COR — Determine the Combined Linear Range for Target and Internal Loading Control
Official quantitative-Western workflow for using a sample-loading series to identify a shared usable range for the target and internal loading control.
Open original source →Bio-Rad — Total Protein Normalization
Manufacturer guidance on proportional signal response, imaging linear range, housekeeping-protein limitations and total-protein normalization for quantitative Western blotting.
Open original source →Bio-Rad — Performing Protein Electrophoresis
Manufacturer guidance on SDS-PAGE setup, sample loading, system-specific running conditions and common distortions associated with power, heat, buffer and sample chemistry.
Open original source →Thermo Fisher Scientific — Overview of Electrophoresis
Official overview of SDS-PAGE, discontinuous buffer systems, polyacrylamide pore-size effects and fixed versus gradient gels.
Open original source →Thermo Fisher Scientific — Protein Gel 1D Electrophoresis Troubleshooting
Manufacturer troubleshooting for smeared or distorted bands, sample overloading, salt, cooling and gel-range problems.
Open original source →Laemmli (1970) — Cleavage of structural proteins during the assembly of the head of bacteriophage T4
Classic methodological source associated with the discontinuous SDS-polyacrylamide gel electrophoresis system widely known as Laemmli SDS-PAGE.
Open original source →Bio-Rad — Separating Proteins to a Blotting Membrane
Transfer-focused technical guide covering transfer direction, wet versus semi-dry roles, membrane preparation, bubbles, molecular-weight effects and reversible transfer staining.
Open original source →Thermo Fisher Scientific — Western Blotting Support: Troubleshooting
Manufacturer troubleshooting for high-MW gel retention, low-MW blow-through, membrane pore size, methanol/SDS tradeoffs and abnormal electrical behavior.
Open original source →Towbin, Staehelin & Gordon (1979) — Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets
Classic paper describing electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose membranes.
Open original source →Cell Signaling Technology — Western Blot Procedure
Manufacturer protocol for sample preparation, transfer, blocking, antibody incubation, washing and detection starting conditions.
Open original source →Cell Signaling Technology — Western Blot Troubleshooting Guide
Problem-specific evidence on sample lysis, viscosity, transfer, buffer choice, washing, background, smears and low-molecular-weight loss.
Open original source →Thermo Fisher Scientific — Overview of Western Blotting
Official overview of electrophoresis, transfer, membranes, blocking, antibodies and detection.
Open original source →Thermo Fisher Scientific — Western Blot Protocols and Recipes
Official protocols and buffer recipes, including membrane preparation and chemiluminescent workflows.
Open original source →Bio-Rad — Introduction to Western Blotting
Step-by-step educational resource from sample preparation through transfer and analysis.
Open original source →Bio-Rad — Western Blot Doctor
Image-pattern-based troubleshooting resource used as a comparison for symptom-first diagnosis.
Open original source →Uhlén et al. — A proposal for validation of antibodies
Application-specific antibody-validation framework: genetic, orthogonal, independent-antibody, tagged-protein and capture-MS strategies.
Open original source →A brief guide to good practices in pharmacological experiments: Western blotting
Peer-reviewed guidance on validation, image integrity, full blots, saturation and comparison on the same blot.
Open original source →Blind spots on western blots
Assessment of common figure and reporting problems, including missing full-length source images and incomplete methods.
Open original source →LI-COR — Housekeeping protein validation
Practical guidance that a housekeeping protein must be shown stable in the actual experimental context before normalization.
Open original source →Source maintenance rule
When a link fails, a product protocol changes or new evidence changes a laboratory decision, the affected page is rechecked and updated. Last systematic source review: 17 August 2026.